From b9973388c6886f34df522e37d2792c33c7c9e567 Mon Sep 17 00:00:00 2001
From: Yuki Hattori <yukihattori1116@gmail.com>
Date: Sun, 10 Sep 2023 05:39:19 +0900
Subject: [PATCH] Adopt Prettier v3 new default style

---
 docs/assets/how-to-use/example.html         |  2 +-
 docs/index.html                             |  2 +-
 docsify/serve.js                            | 12 +++--
 index.d.ts                                  |  6 +--
 src/helpers/postcss_plugin.js               |  4 +-
 src/markdown/background_image/advanced.js   | 20 +++----
 src/markdown/background_image/apply.js      |  2 +-
 src/markdown/background_image/parse.js      |  2 +-
 src/markdown/comment.js                     |  4 +-
 src/markdown/container.js                   |  2 +-
 src/markdown/directives/apply.js            |  8 +--
 src/markdown/directives/parse.js            |  8 +--
 src/markdown/directives/yaml.js             |  2 +-
 src/markdown/header_and_footer.js           |  8 +--
 src/markdown/heading_divider.js             |  2 +-
 src/markdown/image/apply.js                 |  2 +-
 src/markdown/image/parse.js                 | 14 ++---
 src/markdown/inline_svg.js                  | 10 ++--
 src/markdown/slide.js                       |  4 +-
 src/markdown/slide_container.js             |  6 +--
 src/markdown/style/assign.js                | 10 ++--
 src/markdown/style/parse.js                 |  2 +-
 src/marpit.js                               |  4 +-
 src/plugin.js                               |  2 +-
 src/postcss/advanced_background.js          |  4 +-
 src/postcss/import/hoisting.js              |  2 +-
 src/postcss/import/parse.js                 |  2 +-
 src/postcss/import/replace.js               |  4 +-
 src/postcss/import/suppress.js              |  2 +-
 src/postcss/meta.js                         |  2 +-
 src/postcss/pagination.js                   |  6 +--
 src/postcss/printable.js                    |  6 +--
 src/postcss/pseudo_selector/prepend.js      |  2 +-
 src/postcss/pseudo_selector/replace.js      |  4 +-
 src/postcss/root/font_size.js               |  4 +-
 src/postcss/root/increasing_specificity.js  |  4 +-
 src/postcss/root/rem.js                     |  4 +-
 src/postcss/root/replace.js                 |  6 +--
 src/postcss/section_size.js                 |  4 +-
 src/postcss/svg_backdrop.js                 |  6 +--
 src/theme_set.js                            | 12 ++---
 test/helpers/inline_style.js                |  4 +-
 test/markdown/background_image.js           | 60 ++++++++++-----------
 test/markdown/collect.js                    | 16 +++---
 test/markdown/directives/apply.js           |  4 +-
 test/markdown/directives/parse.js           | 10 ++--
 test/markdown/heading_divider.js            |  8 +--
 test/markdown/image.js                      |  6 +--
 test/markdown/inline_svg.js                 |  8 +--
 test/markdown/style/assign.js               | 10 ++--
 test/markdown/style/parse.js                |  4 +-
 test/markdown/sweep.js                      |  2 +-
 test/marpit.js                              | 20 +++----
 test/plugin.js                              |  2 +-
 test/postcss/import/hoisting.js             |  4 +-
 test/postcss/import/parse.js                |  8 +--
 test/postcss/import/replace.js              | 14 ++---
 test/postcss/import/suppress.js             |  4 +-
 test/postcss/pagination.js                  | 38 ++++++-------
 test/postcss/pseudo_selector/replace.js     | 50 ++++++++---------
 test/postcss/root/font_size.js              | 14 ++---
 test/postcss/root/increasing_specificity.js |  6 +--
 test/postcss/root/rem.js                    | 10 ++--
 test/postcss/root/replace.js                | 20 +++----
 test/postcss/section_size.js                | 10 ++--
 test/postcss/svg_backdrop.js                |  2 +-
 test/theme.js                               |  6 +--
 test/theme_set.js                           | 36 ++++++-------
 68 files changed, 296 insertions(+), 292 deletions(-)

diff --git a/docs/assets/how-to-use/example.html b/docs/assets/how-to-use/example.html
index 153253af..c1b3df4f 100644
--- a/docs/assets/how-to-use/example.html
+++ b/docs/assets/how-to-use/example.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html>
   <body>
     <style>
diff --git a/docs/index.html b/docs/index.html
index e14f279d..9da65792 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
diff --git a/docsify/serve.js b/docsify/serve.js
index 094208af..61a3c438 100644
--- a/docsify/serve.js
+++ b/docsify/serve.js
@@ -75,9 +75,9 @@ const server = http.createServer((req, res) => {
               if (endBodyIdx >= 0) {
                 html = `${html.slice(
                   0,
-                  endBodyIdx
+                  endBodyIdx,
                 )}<script>${wsScript}</script></body>${html.slice(
-                  endBodyIdx + 7
+                  endBodyIdx + 7,
                 )}`
               }
 
@@ -87,7 +87,7 @@ const server = http.createServer((req, res) => {
               overriddenHeaders['Content-Length'] = html.length.toString()
               resolve(this)
             },
-          })
+          }),
         )
       }
     })
@@ -99,10 +99,12 @@ const server = http.createServer((req, res) => {
       public: path.resolve(__dirname, '../docs'),
       rewrites: [{ source: '**', destination: '/index.html' }],
     },
-    { createReadStream }
+    { createReadStream },
   )
 })
 
 server.listen(port, () =>
-  console.log(`Listening Marpit documentation on http://127.0.0.1:${port}/ ...`)
+  console.log(
+    `Listening Marpit documentation on http://127.0.0.1:${port}/ ...`,
+  ),
 )
diff --git a/index.d.ts b/index.d.ts
index 5fa5dc0f..b8dedc05 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -35,7 +35,7 @@ declare namespace Marpit {
   type DirectiveDefinitions = {
     [directive: string]: (
       value: string | object | (string | object)[],
-      marpit?: Marpit
+      marpit?: Marpit,
     ) => { [meta: string]: any }
   }
 
@@ -66,7 +66,7 @@ declare namespace Marpit {
   }
 
   type PluginFactory = <P extends any[]>(
-    plugin: Plugin<P, { marpit: Marpit }>
+    plugin: Plugin<P, { marpit: Marpit }>,
   ) => Plugin<P, { marpit: Marpit }>
 
   export class Marpit {
@@ -139,7 +139,7 @@ declare namespace Marpit {
     get(name: string, fallback?: boolean): Theme | undefined
     getThemeMeta(
       theme: string | Theme,
-      meta: string
+      meta: string,
     ): string | string[] | undefined
     getThemeProp(theme: string | Theme, prop: string): any
     has(name: string): boolean
diff --git a/src/helpers/postcss_plugin.js b/src/helpers/postcss_plugin.js
index bc9945dd..128cad57 100644
--- a/src/helpers/postcss_plugin.js
+++ b/src/helpers/postcss_plugin.js
@@ -18,11 +18,11 @@ export function plugin(name, func) {
       return Object.defineProperty(
         typeof retFunc === 'function' ? { Once: retFunc } : retFunc,
         'postcssPlugin',
-        { value: name }
+        { value: name },
       )
     },
     'postcss',
-    { value: true }
+    { value: true },
   )
 }
 
diff --git a/src/markdown/background_image/advanced.js b/src/markdown/background_image/advanced.js
index eb9db0f7..12a41847 100644
--- a/src/markdown/background_image/advanced.js
+++ b/src/markdown/background_image/advanced.js
@@ -44,7 +44,7 @@ function _advancedBackground(md) {
 
             t.attrSet(
               'width',
-              `${100 - Number.parseFloat(splitBgSize.slice(0, -1))}%`
+              `${100 - Number.parseFloat(splitBgSize.slice(0, -1))}%`,
             )
 
             if (splitSide === 'left') t.attrSet('x', splitBgSize)
@@ -99,17 +99,17 @@ function _advancedBackground(md) {
                           {
                             tag: 'figure',
                             style: style.toString(),
-                          }
-                        )
+                          },
+                        ),
                       )
                     }
 
                     return imageTokens
-                  })()
-                )
-              )
+                  })(),
+                ),
+              ),
             ),
-            t
+            t,
           )
         } else if (current && t.type === 'marpit_inline_svg_content_close') {
           const { open, height, width } = current.meta.marpitBackground
@@ -142,8 +142,8 @@ function _advancedBackground(md) {
                 id: undefined,
                 style: style.toString(),
                 'data-marpit-advanced-background': 'pseudo',
-              })
-            )
+              }),
+            ),
           )
 
           current = undefined
@@ -153,7 +153,7 @@ function _advancedBackground(md) {
       }
 
       state.tokens = newTokens
-    }
+    },
   )
 }
 
diff --git a/src/markdown/background_image/apply.js b/src/markdown/background_image/apply.js
index 00dcdce7..f672b0a5 100644
--- a/src/markdown/background_image/apply.js
+++ b/src/markdown/background_image/apply.js
@@ -111,7 +111,7 @@ function _backgroundImageApply(md) {
             }
           }
       }
-    }
+    },
   )
 }
 
diff --git a/src/markdown/background_image/parse.js b/src/markdown/background_image/parse.js
index f88a9ef4..6fbee672 100644
--- a/src/markdown/background_image/parse.js
+++ b/src/markdown/background_image/parse.js
@@ -71,7 +71,7 @@ function _backgroundImageParse(md) {
           }
         }
       }
-    }
+    },
   )
 }
 
diff --git a/src/markdown/comment.js b/src/markdown/comment.js
index f5d78292..ef4e4094 100644
--- a/src/markdown/comment.js
+++ b/src/markdown/comment.js
@@ -90,7 +90,7 @@ function _comment(md) {
       parse(token, token.content)
 
       return true
-    }
+    },
   )
 
   md.inline.ruler.before(
@@ -122,7 +122,7 @@ function _comment(md) {
 
       state.pos += match[0].length
       return true
-    }
+    },
   )
 }
 
diff --git a/src/markdown/container.js b/src/markdown/container.js
index 8ebf5546..45bdb1f0 100644
--- a/src/markdown/container.js
+++ b/src/markdown/container.js
@@ -23,7 +23,7 @@ function _container(md) {
         state.Token,
         'marpit_containers',
         cont,
-        state.tokens
+        state.tokens,
       )
   })
 }
diff --git a/src/markdown/directives/apply.js b/src/markdown/directives/apply.js
index 74af3715..ee0105ef 100644
--- a/src/markdown/directives/apply.js
+++ b/src/markdown/directives/apply.js
@@ -93,7 +93,7 @@ function _apply(md, opts = {}) {
             if (marpitDirectives.backgroundPosition)
               style.set(
                 'background-position',
-                marpitDirectives.backgroundPosition
+                marpitDirectives.backgroundPosition,
               )
 
             if (marpitDirectives.backgroundRepeat)
@@ -114,11 +114,11 @@ function _apply(md, opts = {}) {
             if (marpitDirectives.paginate !== 'skip') {
               token.attrSet(
                 'data-marpit-pagination',
-                marpitSlide - currentSkippedSlides + 1
+                marpitSlide - currentSkippedSlides + 1,
               )
               token.attrSet(
                 'data-marpit-pagination-total',
-                marpitSlideTotal - totalSkippedSlides
+                marpitSlideTotal - totalSkippedSlides,
               )
             }
           }
@@ -133,7 +133,7 @@ function _apply(md, opts = {}) {
           if (styleStr !== '') token.attrSet('style', styleStr)
         }
       }
-    }
+    },
   )
 }
 
diff --git a/src/markdown/directives/parse.js b/src/markdown/directives/parse.js
index e8dca8bf..1f18a46b 100644
--- a/src/markdown/directives/parse.js
+++ b/src/markdown/directives/parse.js
@@ -57,7 +57,7 @@ function _parse(md, opts = {}) {
               ...Object.keys(marpit.customDirectives.global),
               ...Object.keys(marpit.customDirectives.local),
             ]
-          : false
+          : false,
       )
       if (parsed !== false) frontMatterObject.yaml = parsed
     })
@@ -84,7 +84,7 @@ function _parse(md, opts = {}) {
             ...globalDirectives,
             ...applyBuiltinDirectives(
               marpit.customDirectives.global[key](obj[key], marpit),
-              directives.globals
+              directives.globals,
             ),
           }
         }
@@ -138,7 +138,7 @@ function _parse(md, opts = {}) {
             ...cursor.local,
             ...applyBuiltinDirectives(
               marpit.customDirectives.local[key](obj[key], marpit),
-              directives.locals
+              directives.locals,
             ),
           }
         }
@@ -160,7 +160,7 @@ function _parse(md, opts = {}) {
               ...cursor.spot,
               ...applyBuiltinDirectives(
                 marpit.customDirectives.local[spotKey](obj[key], marpit),
-                directives.locals
+                directives.locals,
               ),
             }
           }
diff --git a/src/markdown/directives/yaml.js b/src/markdown/directives/yaml.js
index b3d1f121..a7f24c50 100644
--- a/src/markdown/directives/yaml.js
+++ b/src/markdown/directives/yaml.js
@@ -70,7 +70,7 @@ export const yaml = (text, looseDirectives = false) =>
           ...directives,
           ...(Array.isArray(looseDirectives) ? looseDirectives : []),
         ])
-      : text
+      : text,
   )
 
 export default yaml
diff --git a/src/markdown/header_and_footer.js b/src/markdown/header_and_footer.js
index efebc1ee..86a3fc82 100644
--- a/src/markdown/header_and_footer.js
+++ b/src/markdown/header_and_footer.js
@@ -36,7 +36,7 @@ function _headerAndFooter(md) {
           state.Token,
           `marpit_${tag}`,
           { tag, close: { block: true } },
-          getParsed(markdown)
+          getParsed(markdown),
         )
 
       let current
@@ -49,12 +49,12 @@ function _headerAndFooter(md) {
 
           if (current.meta && current.meta.marpitHeader)
             newTokens.push(
-              ...createMarginalTokens('header', current.meta.marpitHeader)
+              ...createMarginalTokens('header', current.meta.marpitHeader),
             )
         } else if (token.type === 'marpit_slide_close') {
           if (current.meta && current.meta.marpitFooter)
             newTokens.push(
-              ...createMarginalTokens('footer', current.meta.marpitFooter)
+              ...createMarginalTokens('footer', current.meta.marpitFooter),
             )
 
           newTokens.push(token)
@@ -64,7 +64,7 @@ function _headerAndFooter(md) {
       }
 
       state.tokens = newTokens
-    }
+    },
   )
 }
 
diff --git a/src/markdown/heading_divider.js b/src/markdown/heading_divider.js
index 139963b5..9f2e8f89 100644
--- a/src/markdown/heading_divider.js
+++ b/src/markdown/heading_divider.js
@@ -21,7 +21,7 @@ function _headingDivider(md) {
       marpit.lastGlobalDirectives &&
       Object.prototype.hasOwnProperty.call(
         marpit.lastGlobalDirectives,
-        'headingDivider'
+        'headingDivider',
       )
     )
       target = marpit.lastGlobalDirectives.headingDivider
diff --git a/src/markdown/image/apply.js b/src/markdown/image/apply.js
index c5691e3f..6726785e 100644
--- a/src/markdown/image/apply.js
+++ b/src/markdown/image/apply.js
@@ -66,7 +66,7 @@ function _applyImage(md) {
           }
         }
       }
-    }
+    },
   )
 }
 
diff --git a/src/markdown/image/parse.js b/src/markdown/image/parse.js
index 9414b967..36b6aa72 100644
--- a/src/markdown/image/parse.js
+++ b/src/markdown/image/parse.js
@@ -5,7 +5,7 @@ import marpitPlugin from '../../plugin'
 const escape = (target) =>
   target.replace(
     /[\\;:()]/g,
-    (matched) => `\\${matched[0].codePointAt(0).toString(16)} `
+    (matched) => `\\${matched[0].codePointAt(0).toString(16)} `,
   )
 
 const optionMatchers = new Map()
@@ -18,12 +18,12 @@ const normalizeLength = (v) => `${v}${/^(\d*\.)?\d+$/.test(v) ? 'px' : ''}`
 
 optionMatchers.set(
   /^w(?:idth)?:((?:\d*\.)?\d+(?:%|ch|cm|em|ex|in|mm|pc|pt|px)?|auto)$/,
-  (matches) => ({ width: normalizeLength(matches[1]) })
+  (matches) => ({ width: normalizeLength(matches[1]) }),
 )
 
 optionMatchers.set(
   /^h(?:eight)?:((?:\d*\.)?\d+(?:%|ch|cm|em|ex|in|mm|pc|pt|px)?|auto)$/,
-  (matches) => ({ height: normalizeLength(matches[1]) })
+  (matches) => ({ height: normalizeLength(matches[1]) }),
 )
 
 // CSS filters
@@ -44,11 +44,11 @@ optionMatchers.set(
     for (const arg of matches.slice(1)) {
       if (arg) {
         const colorFunc = arg.match(
-          /^(rgba?|hsla?|hwb|(?:ok)?(?:lab|lch)|color)\((.*)\)$/
+          /^(rgba?|hsla?|hwb|(?:ok)?(?:lab|lch)|color)\((.*)\)$/,
         )
 
         args.push(
-          colorFunc ? `${colorFunc[1]}(${escape(colorFunc[2])})` : escape(arg)
+          colorFunc ? `${colorFunc[1]}(${escape(colorFunc[2])})` : escape(arg),
         )
       }
     }
@@ -59,7 +59,7 @@ optionMatchers.set(
         ['drop-shadow', args.join(' ') || '0 5px 10px rgba(0,0,0,.4)'],
       ],
     }
-  }
+  },
 )
 optionMatchers.set(/^grayscale(?::(.+))?$/, (matches, meta) => ({
   filters: [...meta.filters, ['grayscale', escape(matches[1] || '1')]],
@@ -208,7 +208,7 @@ function _parseImage(md) {
             : 'color'
 
           console.warn(
-            `Deprecation warning: Shorthand for setting colors via Markdown image syntax is deprecated now, and will remove in next major release. Please replace to a scoped local direcitve <!-- _${replacedDirective}: "${originalUrl}" -->, or use the scoped style <style scoped>.`
+            `Deprecation warning: Shorthand for setting colors via Markdown image syntax is deprecated now, and will remove in next major release. Please replace to a scoped local direcitve <!-- _${replacedDirective}: "${originalUrl}" -->, or use the scoped style <style scoped>.`,
           )
 
           token.meta.marpitImage.color = originalUrl
diff --git a/src/markdown/inline_svg.js b/src/markdown/inline_svg.js
index bd78352d..b2f5b1af 100644
--- a/src/markdown/inline_svg.js
+++ b/src/markdown/inline_svg.js
@@ -30,7 +30,7 @@ function _inlineSVG(md) {
       for (const tokens of split(
         state.tokens,
         (t) => t.meta && t.meta.marpitSlideElement === 1,
-        true
+        true,
       )) {
         if (tokens.length > 0) {
           for (const t of tokens)
@@ -52,15 +52,15 @@ function _inlineSVG(md) {
                 state.Token,
                 'marpit_inline_svg_content',
                 { tag: 'foreignObject', width: w, height: h },
-                tokens
-              )
-            )
+                tokens,
+              ),
+            ),
           )
         }
       }
 
       state.tokens = newTokens
-    }
+    },
   )
 }
 
diff --git a/src/markdown/slide.js b/src/markdown/slide.js
index 71777f4e..d2b242d3 100644
--- a/src/markdown/slide.js
+++ b/src/markdown/slide.js
@@ -36,7 +36,7 @@ function _slide(md, opts = {}) {
     const splittedTokens = split(
       state.tokens,
       (t) => t.type === 'hr' && t.level === 0,
-      true
+      true,
     )
     const { length: marpitSlideTotal } = splittedTokens
 
@@ -67,7 +67,7 @@ function _slide(md, opts = {}) {
               meta: { marpitSlide, marpitSlideTotal, marpitSlideElement: -1 },
             },
           },
-          slideTokens.slice(firstHr ? 1 : 0)
+          slideTokens.slice(firstHr ? 1 : 0),
         ),
       ]
     }, [])
diff --git a/src/markdown/slide_container.js b/src/markdown/slide_container.js
index 8ea4a090..da012989 100644
--- a/src/markdown/slide_container.js
+++ b/src/markdown/slide_container.js
@@ -24,15 +24,15 @@ function _slideContainer(md) {
     for (const tokens of split(
       state.tokens,
       (t) => t.meta && t.meta.marpitSlideElement === 1,
-      true
+      true,
     )) {
       if (tokens.length > 0)
         newTokens.push(
           ...target.reduce(
             (slides, conts) =>
               wrapTokens(state.Token, 'marpit_slide_containers', conts, slides),
-            tokens
-          )
+            tokens,
+          ),
         )
     }
 
diff --git a/src/markdown/style/assign.js b/src/markdown/style/assign.js
index d4a55276..67276176 100644
--- a/src/markdown/style/assign.js
+++ b/src/markdown/style/assign.js
@@ -40,7 +40,7 @@ const injectScopePostCSSplugin = postcssPlugin(
           return `section[${generateScopeAttr(key)}]${injectSelector}`
         })
       }
-    })
+    }),
 )
 
 const scopeKeyframesPostCSSPlugin = postcssPlugin(
@@ -51,13 +51,13 @@ const scopeKeyframesPostCSSPlugin = postcssPlugin(
     const keyframeMatcher = new RegExp(
       `\\b(${[...keyframeSet.values()]
         .map((kf) => kf.replace(/[.*+\-?^${}()|[\]\\]/g, '\\$&'))
-        .join('|')})(?!\\()\\b`
+        .join('|')})(?!\\()\\b`,
     )
 
     css.walkDecls(/^animation(-name)?$/, (decl) => {
       decl.value = decl.value.replace(keyframeMatcher, (kf) => `${kf}-${key}`)
     })
-  }
+  },
 )
 
 /**
@@ -132,13 +132,13 @@ function _assign(md) {
           const processor = postcss([
             injectScopePostCSSplugin(
               key,
-              current.meta.marpitStyleScoped.keyframeSet
+              current.meta.marpitStyleScoped.keyframeSet,
             ),
           ])
 
           try {
             current.meta.marpitStyleScoped.styles.push(
-              processor.process(content).css
+              processor.process(content).css,
             )
           } catch (e) {
             // No ops
diff --git a/src/markdown/style/parse.js b/src/markdown/style/parse.js
index b9319d4c..26458620 100644
--- a/src/markdown/style/parse.js
+++ b/src/markdown/style/parse.js
@@ -72,7 +72,7 @@ function _parse(md) {
       }
 
       return true
-    }
+    },
   )
 }
 
diff --git a/src/marpit.js b/src/marpit.js
index d967b988..c563510e 100644
--- a/src/marpit.js
+++ b/src/marpit.js
@@ -137,7 +137,7 @@ class Marpit {
 
         // Create instance with passed argument(s)
         return new MarkdownIt(...wrapArray(this.options.markdown))
-      })()
+      })(),
     )
   }
 
@@ -231,7 +231,7 @@ class Marpit {
 
     if (env.htmlAsArray) {
       return this.lastSlideTokens.map((slideTokens) =>
-        this.markdown.renderer.render(slideTokens, this.markdown.options, env)
+        this.markdown.renderer.render(slideTokens, this.markdown.options, env),
       )
     }
 
diff --git a/src/plugin.js b/src/plugin.js
index 1e56075e..f53afd8a 100644
--- a/src/plugin.js
+++ b/src/plugin.js
@@ -33,7 +33,7 @@ function marpitPlugin(plugin) {
     if (md.marpit) return plugin.call(this, md, ...args)
 
     throw new Error(
-      'Marpit plugin has detected incompatible markdown-it instance.'
+      'Marpit plugin has detected incompatible markdown-it instance.',
     )
   }
 }
diff --git a/src/postcss/advanced_background.js b/src/postcss/advanced_background.js
index 60d23131..dba82bba 100644
--- a/src/postcss/advanced_background.js
+++ b/src/postcss/advanced_background.js
@@ -70,9 +70,9 @@ section[data-marpit-advanced-background-split] {
   width: 100%;
   height: 100%;
 }
-`.trim()
+`.trim(),
     )
-  }
+  },
 )
 
 export default advancedBackground
diff --git a/src/postcss/import/hoisting.js b/src/postcss/import/hoisting.js
index dc403f05..1c1127ae 100644
--- a/src/postcss/import/hoisting.js
+++ b/src/postcss/import/hoisting.js
@@ -41,7 +41,7 @@ export const importHoisting = postcssPlugin(
 
         first.before(prependRule)
       })
-  }
+  },
 )
 
 export default importHoisting
diff --git a/src/postcss/import/parse.js b/src/postcss/import/parse.js
index 5be4555b..a3f58cd7 100644
--- a/src/postcss/import/parse.js
+++ b/src/postcss/import/parse.js
@@ -72,7 +72,7 @@ export const importParse = postcssPlugin(
       })
 
       result.marpitImport = [...imports.importTheme, ...imports.import]
-    }
+    },
 )
 
 export default importParse
diff --git a/src/postcss/import/replace.js b/src/postcss/import/replace.js
index 3984388b..9131f95f 100644
--- a/src/postcss/import/replace.js
+++ b/src/postcss/import/replace.js
@@ -32,7 +32,7 @@ export const importReplace = (themeSet, importedThemes = []) =>
                 if (theme) {
                   if (importedThemes.includes(name))
                     throw new Error(
-                      `Circular "${name}" theme import is detected.`
+                      `Circular "${name}" theme import is detected.`,
                     )
 
                   const processed = postcss([
@@ -50,7 +50,7 @@ export const importReplace = (themeSet, importedThemes = []) =>
             })
 
             for (const root of prepends) css.first.before(root)
-          }
+          },
       )(),
     ],
   }))
diff --git a/src/postcss/import/suppress.js b/src/postcss/import/suppress.js
index 1f3be7a4..19d3dbf0 100644
--- a/src/postcss/import/suppress.js
+++ b/src/postcss/import/suppress.js
@@ -25,7 +25,7 @@ export const importSuppress = postcssPlugin(
         })
       })(),
     ],
-  })
+  }),
 )
 
 export default importSuppress
diff --git a/src/postcss/meta.js b/src/postcss/meta.js
index 9d6b41d0..131b819e 100644
--- a/src/postcss/meta.js
+++ b/src/postcss/meta.js
@@ -34,7 +34,7 @@ export const meta = postcssPlugin(
             }
           })
       })
-    }
+    },
 )
 
 export default meta
diff --git a/src/postcss/pagination.js b/src/postcss/pagination.js
index 060e8366..2a8fc9a9 100644
--- a/src/postcss/pagination.js
+++ b/src/postcss/pagination.js
@@ -20,8 +20,8 @@ export const pagination = postcssPlugin(
       if (
         rule.selectors.some((selector) =>
           /^section(?![\w-])[^\s>+~]*::?after$/.test(
-            selector.replace(/\[.*?\]/g, '')
-          )
+            selector.replace(/\[.*?\]/g, ''),
+          ),
         )
       )
         rule.walkDecls('content', (decl) => {
@@ -29,7 +29,7 @@ export const pagination = postcssPlugin(
             decl.replaceWith(`${decl.raw('before')}/* ${decl.toString()}; */`)
         })
     })
-  }
+  },
 )
 
 export default pagination
diff --git a/src/postcss/printable.js b/src/postcss/printable.js
index dd70a4d2..9ec131c0 100644
--- a/src/postcss/printable.js
+++ b/src/postcss/printable.js
@@ -54,9 +54,9 @@ export const printable = postcssPlugin(
     width: 100vw;
   }
 }
-`.trim()
+`.trim(),
     )
-  }
+  },
 )
 
 /**
@@ -72,7 +72,7 @@ export const postprocess = postcssPlugin(
 
       rule.params = 'print'
       rule.first.before(marpitPrintContainerStyle)
-    })
+    }),
 )
 
 export default printable
diff --git a/src/postcss/pseudo_selector/prepend.js b/src/postcss/pseudo_selector/prepend.js
index b82850e8..31ce1f7a 100644
--- a/src/postcss/pseudo_selector/prepend.js
+++ b/src/postcss/pseudo_selector/prepend.js
@@ -24,7 +24,7 @@ export const pseudoSelectorPrepend = postcssPlugin(
 
         return `:marpit-container > :marpit-slide ${selector}`
       })
-    })
+    }),
 )
 
 export default pseudoSelectorPrepend
diff --git a/src/postcss/pseudo_selector/replace.js b/src/postcss/pseudo_selector/replace.js
index c88bc802..ab588995 100644
--- a/src/postcss/pseudo_selector/replace.js
+++ b/src/postcss/pseudo_selector/replace.js
@@ -40,10 +40,10 @@ export const pseudoSelectorReplace = postcssPlugin(
           selector
             .replace(/:marpit-container(?![\w-])/g, container)
             .replace(/:marpit-slide(?![\w-])/g, section)
-            .replace(/^\s*>\s*/, '')
+            .replace(/^\s*>\s*/, ''),
         )
       })
-  }
+  },
 )
 
 export default pseudoSelectorReplace
diff --git a/src/postcss/root/font_size.js b/src/postcss/root/font_size.js
index 76b80a27..888cf848 100644
--- a/src/postcss/root/font_size.js
+++ b/src/postcss/root/font_size.js
@@ -37,7 +37,7 @@ export const rootFontSize = postcssPlugin(
               delimiterMatched
                 ? targetSelector.slice(delimiterMatched.index)
                 : '',
-            ].join('')
+            ].join(''),
           )
         }
       }
@@ -54,7 +54,7 @@ export const rootFontSize = postcssPlugin(
       })
 
       if (injectRule.nodes.length > 0) rule.parent.insertAfter(rule, injectRule)
-    })
+    }),
 )
 
 export default rootFontSize
diff --git a/src/postcss/root/increasing_specificity.js b/src/postcss/root/increasing_specificity.js
index f48ef4d9..a7e33372 100644
--- a/src/postcss/root/increasing_specificity.js
+++ b/src/postcss/root/increasing_specificity.js
@@ -20,9 +20,9 @@ export const rootIncreasingSpecificity = postcssPlugin(
   () => (css) =>
     css.walkRules((rule) => {
       rule.selectors = rule.selectors.map((selector) =>
-        selector.replace(matcher, ':where(section):not([\\20 root])')
+        selector.replace(matcher, ':where(section):not([\\20 root])'),
       )
-    })
+    }),
 )
 
 export default rootIncreasingSpecificity
diff --git a/src/postcss/root/rem.js b/src/postcss/root/rem.js
index 293f66b4..8f714abe 100644
--- a/src/postcss/root/rem.js
+++ b/src/postcss/root/rem.js
@@ -22,11 +22,11 @@ export const rem = postcssPlugin(
 
           return v.replace(
             /(\d*\.?\d+)rem\b/g,
-            (_, num) => `calc(var(${rootFontSizeCustomProp}, 1rem) * ${num})`
+            (_, num) => `calc(var(${rootFontSizeCustomProp}, 1rem) * ${num})`,
           )
         })
         .join('')
-    })
+    }),
 )
 
 export default rem
diff --git a/src/postcss/root/replace.js b/src/postcss/root/replace.js
index 2e67c530..f487f922 100644
--- a/src/postcss/root/replace.js
+++ b/src/postcss/root/replace.js
@@ -19,10 +19,10 @@ export const rootReplace = postcssPlugin(
         rule.selectors = rule.selectors.map((selector) =>
           selector.replace(
             /(^|[\s>+~(])(?:section)?:root\b/g,
-            (_, s) => `${s}section${pseudoClass || ''}`
-          )
+            (_, s) => `${s}section${pseudoClass || ''}`,
+          ),
         )
-      })
+      }),
 )
 
 export default rootReplace
diff --git a/src/postcss/section_size.js b/src/postcss/section_size.js
index 145fa436..81dc164c 100644
--- a/src/postcss/section_size.js
+++ b/src/postcss/section_size.js
@@ -12,7 +12,7 @@ export const sectionSize = postcssPlugin(
   'marpit-postcss-section-size',
   ({ preferedPseudoClass } = {}) => {
     const rootSectionMatcher = new RegExp(
-      `^section${preferedPseudoClass ? `(${preferedPseudoClass})?` : ''}$`
+      `^section${preferedPseudoClass ? `(${preferedPseudoClass})?` : ''}$`,
     )
 
     return (css, { result }) => {
@@ -53,7 +53,7 @@ export const sectionSize = postcssPlugin(
       if (width) result.marpitSectionSize.width = width
       if (height) result.marpitSectionSize.height = height
     }
-  }
+  },
 )
 
 export default sectionSize
diff --git a/src/postcss/svg_backdrop.js b/src/postcss/svg_backdrop.js
index cc3aa24e..259b3668 100644
--- a/src/postcss/svg_backdrop.js
+++ b/src/postcss/svg_backdrop.js
@@ -54,7 +54,7 @@ export const svgBackdrop = postcssPlugin(
         if (target === 'section' || target === '') {
           const delimiter = selector.slice(delimiterMatched.index, -10)
           injectSelectors.add(
-            `:marpit-container > svg[data-marpit-svg]${delimiter}`
+            `:marpit-container > svg[data-marpit-svg]${delimiter}`,
           )
         }
       }
@@ -71,11 +71,11 @@ export const svgBackdrop = postcssPlugin(
                 nodes: rule.nodes,
               }),
             ],
-          })
+          }),
         )
       }
     })
-  }
+  },
 )
 
 export default svgBackdrop
diff --git a/src/theme_set.js b/src/theme_set.js
index dbaa97f5..f20173fc 100644
--- a/src/theme_set.js
+++ b/src/theme_set.js
@@ -207,7 +207,7 @@ class ThemeSet {
       : []
 
     return [...props, this.default && this.default[prop], scaffold[prop]].find(
-      (t) => t
+      (t) => t,
     )
   }
 
@@ -268,7 +268,7 @@ class ThemeSet {
         before &&
           postcssPlugin(
             'marpit-pack-before',
-            () => (css) => css.first.before(before)
+            () => (css) => css.first.before(before),
           ),
         after &&
           postcssPlugin('marpit-pack-after', () => (css) => {
@@ -284,7 +284,7 @@ class ThemeSet {
         theme !== scaffold &&
           postcssPlugin(
             'marpit-pack-scaffold',
-            () => (css) => css.first.before(scaffold.css)
+            () => (css) => css.first.before(scaffold.css),
           ),
         inlineSVGOpts.enabled && postcssAdvancedBackground,
         inlineSVGOpts.enabled &&
@@ -299,7 +299,7 @@ class ThemeSet {
         opts.printable && postcssPrintablePostProcess,
         postcssRem,
         postcssImportHoisting,
-      ].filter((p) => p)
+      ].filter((p) => p),
     )
 
     return packer.process(theme.css).css
@@ -338,8 +338,8 @@ class ThemeSet {
         resolvedThemes.push(
           ...this.resolveImport(
             importTheme,
-            [...importedThemes, name].filter((n) => n)
-          )
+            [...importedThemes, name].filter((n) => n),
+          ),
         )
     })
 
diff --git a/test/helpers/inline_style.js b/test/helpers/inline_style.js
index f9cfe76b..fd785f64 100644
--- a/test/helpers/inline_style.js
+++ b/test/helpers/inline_style.js
@@ -18,14 +18,14 @@ describe('InlineStyle helper class', () => {
     context('with decls argument in string', () => {
       it('assigns parsed declarations', () =>
         expect(new InlineStyle('font-size: 20px;').toString()).toBe(
-          'font-size:20px;'
+          'font-size:20px;',
         ))
     })
 
     context('with decls argument in object', () => {
       it('assigns the pair of declaration and value', () =>
         expect(new InlineStyle({ border: '1px solid #000' }).toString()).toBe(
-          'border:1px solid #000;'
+          'border:1px solid #000;',
         ))
     })
 
diff --git a/test/markdown/background_image.js b/test/markdown/background_image.js
index ec46a63c..4f05fd7c 100644
--- a/test/markdown/background_image.js
+++ b/test/markdown/background_image.js
@@ -152,12 +152,12 @@ describe('Marpit background image plugin', () => {
 
       const bg = $('svg > foreignObject:first-child')
       const bgSection = bg.find(
-        '> section[data-marpit-advanced-background="background"]'
+        '> section[data-marpit-advanced-background="background"]',
       )
       expect(bgSection).toHaveLength(1)
 
       const figure = bgSection.find(
-        '> div[data-marpit-advanced-background-container] > figure'
+        '> div[data-marpit-advanced-background-container] > figure',
       )
       expect(figure).toHaveLength(1)
       expect(figure.attr('style')).toBe('background-image:url("image");')
@@ -167,7 +167,7 @@ describe('Marpit background image plugin', () => {
       const $ = $load(mdSVG().render('![bg](img"\\);color:#f00;--xss:url\\(")'))
 
       expect($('figure').attr('style')).not.toBe(
-        'background-image:("img");color:#f00;--xss:url("");'
+        'background-image:("img");color:#f00;--xss:url("");',
       )
     })
 
@@ -176,21 +176,21 @@ describe('Marpit background image plugin', () => {
         xmlMode: true,
       })
       const slideSection = $(
-        'svg > foreignObject > section[data-marpit-advanced-background="content"]'
+        'svg > foreignObject > section[data-marpit-advanced-background="content"]',
       )
 
       expect(slideSection.find('h1')).toHaveLength(1)
       expect(slideSection.attr('data-marpit-advanced-background')).toBe(
-        'content'
+        'content',
       )
     })
 
     it("inherits slide section's style assigned by directive", () => {
       const $ = $load(
-        mdSVG().render('<!-- backgroundImage: url(A) -->\n\n![bg](B)')
+        mdSVG().render('<!-- backgroundImage: url(A) -->\n\n![bg](B)'),
       )
       const bgSection = $(
-        'section[data-marpit-advanced-background="background"]'
+        'section[data-marpit-advanced-background="background"]',
       )
 
       expect(bgSection.attr('style')).toContain('background-image:url(A);')
@@ -230,13 +230,13 @@ describe('Marpit background image plugin', () => {
         const $ = (attr) =>
           $load(
             mdSVG().render(
-              `![bg ${[keyword, attr].filter((v) => v).join(':')}](image)`
+              `![bg ${[keyword, attr].filter((v) => v).join(':')}](image)`,
             ),
-            { xmlMode: true }
+            { xmlMode: true },
           )
 
         const section = $()(
-          'svg > foreignObject > section[data-marpit-advanced-background="content"]'
+          'svg > foreignObject > section[data-marpit-advanced-background="content"]',
         )
         const foreignObject = section.parent()
 
@@ -245,17 +245,17 @@ describe('Marpit background image plugin', () => {
 
         it('assigns CSS variable to style attribute for split background', () =>
           expect(section.attr('style')).toContain(
-            '--marpit-advanced-background-split:50%'
+            '--marpit-advanced-background-split:50%',
           ))
 
         it('assigns data attribute of the keyword for split background', () =>
           expect(section.attr('data-marpit-advanced-background-split')).toBe(
-            keyword
+            keyword,
           ))
 
         context('when passed split size for background', () => {
           const ssSection = $('33%')(
-            'svg > foreignObject > section[data-marpit-advanced-background="content"]'
+            'svg > foreignObject > section[data-marpit-advanced-background="content"]',
           )
           const ssforeignObject = ssSection.parent()
 
@@ -264,7 +264,7 @@ describe('Marpit background image plugin', () => {
 
           it('assigns CSS variable to style attribute for split background', () =>
             expect(ssSection.attr('style')).toContain(
-              '--marpit-advanced-background-split:33%'
+              '--marpit-advanced-background-split:33%',
             ))
         })
       })
@@ -273,7 +273,7 @@ describe('Marpit background image plugin', () => {
     it('assigns x attribute of foreignObject for content as 50% with left keyword', () => {
       const $ = $load(mdSVG().render(`![bg left](image)`), { xmlMode: true })
       const section = $(
-        'svg > foreignObject > section[data-marpit-advanced-background="content"]'
+        'svg > foreignObject > section[data-marpit-advanced-background="content"]',
       )
       const foreignObject = section.parent()
 
@@ -289,13 +289,13 @@ describe('Marpit background image plugin', () => {
 
         it('uses the last defined keyword', () => {
           const section = $(
-            'svg > foreignObject > section[data-marpit-advanced-background="content"]'
+            'svg > foreignObject > section[data-marpit-advanced-background="content"]',
           )
           expect(section.attr('data-marpit-advanced-background-split')).toBe(
-            'left'
+            'left',
           )
         })
-      }
+      },
     )
 
     describe('Direction keyword', () => {
@@ -304,7 +304,7 @@ describe('Marpit background image plugin', () => {
         const container = $('div[data-marpit-advanced-background-container]')
 
         expect(
-          container.attr('data-marpit-advanced-background-direction')
+          container.attr('data-marpit-advanced-background-direction'),
         ).toBe('horizontal')
       })
 
@@ -314,19 +314,19 @@ describe('Marpit background image plugin', () => {
           const container = $('div[data-marpit-advanced-background-container]')
 
           expect(
-            container.attr('data-marpit-advanced-background-direction')
+            container.attr('data-marpit-advanced-background-direction'),
           ).toBe('vertical')
         })
       })
 
       it('uses the last defined direction when defined multiple directions', () => {
         const $ = $load(
-          mdSVG().render('![bg vertical](img1) ![bg horizontal](img2)')
+          mdSVG().render('![bg vertical](img1) ![bg horizontal](img2)'),
         )
         const container = $('div[data-marpit-advanced-background-container]')
 
         expect(
-          container.attr('data-marpit-advanced-background-direction')
+          container.attr('data-marpit-advanced-background-direction'),
         ).toBe('horizontal')
       })
     })
@@ -397,7 +397,7 @@ describe('Marpit background image plugin', () => {
             // It won't escape the brackets that is wrapping the color syntax.
             'drop-shadow:0,0,0,rgba(0,0,0,1;)':
               'filter:drop-shadow(0 0 0 rgba(0,0,0,1\\3b ));',
-          }
+          },
         )
 
         Object.keys(injections).forEach((filter) => {
@@ -412,9 +412,9 @@ describe('Marpit background image plugin', () => {
     context('with paginate and class directive', () => {
       const $ = $load(
         mdSVG().render(
-          '---\npaginate: true\nclass: pseudo layer\n---\n\n![bg](test)'
+          '---\npaginate: true\nclass: pseudo layer\n---\n\n![bg](test)',
         ),
-        { xmlMode: true }
+        { xmlMode: true },
       )
 
       it('assigns pagination attributes to pseudo layer', () => {
@@ -423,7 +423,7 @@ describe('Marpit background image plugin', () => {
 
         const pseudoFO = foreignObjects.eq(2)
         expect(pseudoFO.is('[data-marpit-advanced-background="pseudo"]')).toBe(
-          true
+          true,
         )
 
         const pseudoLayer = pseudoFO.find('> section.pseudo.layer')
@@ -435,9 +435,9 @@ describe('Marpit background image plugin', () => {
     context('with scoped style', () => {
       const $ = $load(
         mdSVG().render(
-          "![bg](test)\n\n<style scoped>section::before { content: 'test'; }</style>"
+          "![bg](test)\n\n<style scoped>section::before { content: 'test'; }</style>",
         ),
-        { xmlMode: true }
+        { xmlMode: true },
       )
 
       it('assigns scoped attribute to the section element in pseudo layer', () => {
@@ -446,7 +446,7 @@ describe('Marpit background image plugin', () => {
         const pseudoSection = pseudoFO.find('> section')
 
         expect(Object.keys(pseudoSection.attr())).toContainEqual(
-          expect.stringMatching(/^data-marpit-scope-/)
+          expect.stringMatching(/^data-marpit-scope-/),
         )
       })
     })
@@ -465,7 +465,7 @@ describe('Marpit background image plugin', () => {
     context('with background color definition', () => {
       const $ = $load(mdSVG().render('![bg](red) ![bg](test)'))
       const bgSection = $(
-        'section[data-marpit-advanced-background="background"]'
+        'section[data-marpit-advanced-background="background"]',
       )
 
       it('assigns backgroundColor style to background layer', () =>
diff --git a/test/markdown/collect.js b/test/markdown/collect.js
index 24cae027..46708df7 100644
--- a/test/markdown/collect.js
+++ b/test/markdown/collect.js
@@ -86,7 +86,7 @@ describe('Marpit collect plugin', () => {
     expect(original).toBe(
       marpit.lastSlideTokens
         .map((tokens) => markdownIt.renderer.render(tokens, markdownIt.options))
-        .join('')
+        .join(''),
     )
   })
 
@@ -103,7 +103,7 @@ describe('Marpit collect plugin', () => {
     ])
     expect(lastComments[1]).toStrictEqual([
       expect.stringContaining(
-        'Comment would collect if yaml has only invalid directive'
+        'Comment would collect if yaml has only invalid directive',
       ),
     ])
     expect(lastComments[2]).toHaveLength(0)
@@ -128,7 +128,7 @@ describe('Marpit collect plugin', () => {
                     if (t.content === 'inline comment') markAsParsed(t, 'test')
                 }
               }
-            }
+            },
           )
         })
         .render(text)
@@ -157,7 +157,7 @@ describe('Marpit collect plugin', () => {
           <!--  prettier-ignore-start  -->
           <!-- test -->
           <!--prettier-ignore-end-->
-        `)
+        `),
       ).toHaveLength(1)
 
       // markdownlint
@@ -166,7 +166,7 @@ describe('Marpit collect plugin', () => {
           <!-- markdownlint-disable no-space-in-emphasis -->
           deliberate space * in * emphasis
           <!-- markdownlint-enable no-space-in-emphasis -->
-        `)
+        `),
       ).toHaveLength(0)
       expect(
         comments(dedent`
@@ -174,7 +174,7 @@ describe('Marpit collect plugin', () => {
           <!-- markdownlint-disable -->
           any violations you want
           <!-- markdownlint-restore -->
-        `)
+        `),
       ).toHaveLength(0)
 
       // remark-lint (remark-message-control)
@@ -189,7 +189,7 @@ describe('Marpit collect plugin', () => {
           ## Hello
 
           <!-- lint enable no-duplicate-headings -->
-        `)
+        `),
       ).toHaveLength(0)
       expect(
         comments(dedent`
@@ -197,7 +197,7 @@ describe('Marpit collect plugin', () => {
 
           *   **foo**
             * __bar__
-        `)
+        `),
       ).toHaveLength(0)
     })
   })
diff --git a/test/markdown/directives/apply.js b/test/markdown/directives/apply.js
index fea7584a..88725629 100644
--- a/test/markdown/directives/apply.js
+++ b/test/markdown/directives/apply.js
@@ -39,7 +39,7 @@ describe('Marpit directives apply plugin', () => {
               token.meta.marpitDirectives.unknownDir = 'directive'
             }
           })
-        }
+        },
       )
     })
 
@@ -203,7 +203,7 @@ describe('Marpit directives apply plugin', () => {
           expect(style.color).toBe('black')
 
           Array.from({ length: 6 }, (v, k) => k + 1).forEach((i) =>
-            expect(style[`--injection${i}`]).toBeUndefined()
+            expect(style[`--injection${i}`]).toBeUndefined(),
           )
         })
       })
diff --git a/test/markdown/directives/parse.js b/test/markdown/directives/parse.js
index 46b42ad3..bac674b4 100644
--- a/test/markdown/directives/parse.js
+++ b/test/markdown/directives/parse.js
@@ -121,7 +121,7 @@ describe('Marpit directives parse plugin', () => {
       const parsed = md().parse(text)
       const [first, second, third] = parsed.reduce(
         (arr, t) => (t.type === 'marpit_slide_open' ? [...arr, t] : arr),
-        []
+        [],
       )
 
       expect(first.meta.marpitDirectives).toStrictEqual({})
@@ -143,14 +143,14 @@ describe('Marpit directives parse plugin', () => {
           const parsed = md().parse(text)
           const [first, second, third] = parsed.reduce(
             (arr, t) => (t.type === 'marpit_slide_open' ? [...arr, t] : arr),
-            []
+            [],
           )
 
           expect(first.meta.marpitDirectives).toStrictEqual({})
           expect(second.meta.marpitDirectives).toStrictEqual({ class: 'test' })
           expect(third.meta.marpitDirectives).toStrictEqual({})
         })
-      }
+      },
     )
 
     context('with class directive', () => {
@@ -159,7 +159,7 @@ describe('Marpit directives parse plugin', () => {
       it('supports class definition by array', () => {
         const flatParsed = md().parse('<!-- class: ["one", "two", "three"] -->')
         const [flatOpen] = flatParsed.filter(
-          (t) => t.type === 'marpit_slide_open'
+          (t) => t.type === 'marpit_slide_open',
         )
         expect(flatOpen.meta.marpitDirectives).toMatchObject(expected)
 
@@ -172,7 +172,7 @@ describe('Marpit directives parse plugin', () => {
           ---
         `)
         const [multilineOpen] = multilineParsed.filter(
-          (t) => t.type === 'marpit_slide_open'
+          (t) => t.type === 'marpit_slide_open',
         )
         expect(multilineOpen.meta.marpitDirectives).toMatchObject(expected)
       })
diff --git a/test/markdown/heading_divider.js b/test/markdown/heading_divider.js
index 96b87854..76bc80a0 100644
--- a/test/markdown/heading_divider.js
+++ b/test/markdown/heading_divider.js
@@ -15,7 +15,7 @@ describe('Marpit heading divider plugin', () => {
 
   const pickHrAndHeading = (tokens) =>
     tokens.filter(
-      (t, idx) => t.type === 'hr' || (idx > 0 && tokens[idx - 1].type === 'hr')
+      (t, idx) => t.type === 'hr' || (idx > 0 && tokens[idx - 1].type === 'hr'),
     )
 
   describe('Constructor option', () => {
@@ -106,7 +106,7 @@ describe('Marpit heading divider plugin', () => {
       it('maps corresponded line of slide to heading', () => {
         const tokens = mdWithSlide(marpitStub(4)).parse(markdownText)
         const [first, second, third, fourth] = tokens.filter(
-          (t) => t.type === 'marpit_slide_open'
+          (t) => t.type === 'marpit_slide_open',
         )
 
         expect(first.map).toStrictEqual([0, 1])
@@ -131,7 +131,7 @@ describe('Marpit heading divider plugin', () => {
       marpitInstance = {
         customDirectives: { global: {}, local: {} },
         options: {},
-      }
+      },
     ) => {
       const instance = new MarkdownIt('commonmark')
       instance.marpit = marpitInstance
@@ -189,7 +189,7 @@ describe('Marpit heading divider plugin', () => {
           expect(hrAndHeadings[3].type).toBe('heading_open')
           expect(hrAndHeadings[3].tag).toBe('h4')
         })
-      }
+      },
     )
 
     context('with headingDivider constructor option', () => {
diff --git a/test/markdown/image.js b/test/markdown/image.js
index c5d1159a..8ca7dbe7 100644
--- a/test/markdown/image.js
+++ b/test/markdown/image.js
@@ -36,7 +36,7 @@ describe('Marpit image plugin', () => {
 
     context('with header image via directive', () => {
       const tokens = md().parse(
-        '<!-- header: "![](header.png)" -->\n\n![](content.png)'
+        '<!-- header: "![](header.png)" -->\n\n![](content.png)',
       )
 
       it('uses primitive string as src attribute for all images', () => {
@@ -101,7 +101,7 @@ describe('Marpit image plugin', () => {
 
     it('removes recognized Marpit keywords from alt attribute of the output image', () => {
       const output = md().render(
-        `![w:100px \t This is  example\timage \t h:200px](https://example.com/test.jpg)`
+        `![w:100px \t This is  example\timage \t h:200px](https://example.com/test.jpg)`,
       )
       const $ = load(output)
 
@@ -123,7 +123,7 @@ describe('Marpit image plugin', () => {
       expect(colorDirective(colorMd('currentColor'))).toBe('currentColor')
       expect(colorDirective(colorMd('rgb(255,128,0)'))).toBe('rgb(255,128,0)')
       expect(colorDirective(colorMd('rgba(16,32,64,0.5)'))).toBe(
-        'rgba(16,32,64,0.5)'
+        'rgba(16,32,64,0.5)',
       )
     })
 
diff --git a/test/markdown/inline_svg.js b/test/markdown/inline_svg.js
index a9351251..63ebb618 100644
--- a/test/markdown/inline_svg.js
+++ b/test/markdown/inline_svg.js
@@ -22,7 +22,7 @@ describe('Marpit inline SVG plugin', () => {
     return instance
       .use(slide)
       .use((pluginMd) =>
-        pluginMd.core.ruler.push('marpit_directives_parse', () => {})
+        pluginMd.core.ruler.push('marpit_directives_parse', () => {}),
       )
       .use(inlineSVG)
   }
@@ -42,8 +42,8 @@ describe('Marpit inline SVG plugin', () => {
 
     expect(
       $(
-        'svg[viewBox][data-marpit-svg] > foreignObject[width][height] > section'
-      )
+        'svg[viewBox][data-marpit-svg] > foreignObject[width][height] > section',
+      ),
     ).toHaveLength(2)
   })
 
@@ -90,7 +90,7 @@ describe('Marpit inline SVG plugin', () => {
       context('with specified default theme', () => {
         const defaultTheme = Theme.fromCSS(
           'section { width: 160px; height: 90px; }',
-          { [skipThemeValidationSymbol]: true }
+          { [skipThemeValidationSymbol]: true },
         )
 
         const defaultThemeSelector = [
diff --git a/test/markdown/style/assign.js b/test/markdown/style/assign.js
index f4ab651d..de39b1f4 100644
--- a/test/markdown/style/assign.js
+++ b/test/markdown/style/assign.js
@@ -42,7 +42,7 @@ describe('Marpit style assign plugin', () => {
       it('assigns parsed styles to Marpit lastStyles property with scoped', () => {
         const marpit = marpitStub()
         const $ = load(
-          md(marpit).render('<style scoped>b { color: red; }</style>')
+          md(marpit).render('<style scoped>b { color: red; }</style>'),
         )
 
         const [style] = marpit.lastStyles
@@ -127,7 +127,7 @@ describe('Marpit style assign plugin', () => {
           const dividedMatched = dividedCss.match(/@keyframes (abc-\w+)/)
           expect(dividedMatched).toBeTruthy()
           expect(dividedCss).toContain(
-            `animation-name: foo,${dividedMatched[1]} ,bar;`
+            `animation-name: foo,${dividedMatched[1]} ,bar;`,
           )
 
           // animation shorthands
@@ -148,13 +148,13 @@ describe('Marpit style assign plugin', () => {
           const shorthandMatched = shorthandCss.match(/@keyframes (steps-\w+)/)
           expect(shorthandMatched).toBeTruthy()
           expect(shorthandCss).toContain(
-            `animation: ${shorthandMatched[1]} 1s linear 0s infinite;`
+            `animation: ${shorthandMatched[1]} 1s linear 0s infinite;`,
           )
           expect(shorthandCss).toContain(
-            `animation: 1s steps(6) 0s infinite ${shorthandMatched[1]};`
+            `animation: 1s steps(6) 0s infinite ${shorthandMatched[1]};`,
           )
           expect(shorthandCss).toContain(
-            `animation: 1s foo, 2s ${shorthandMatched[1]}, 3s bar;`
+            `animation: 1s foo, 2s ${shorthandMatched[1]}, 3s bar;`,
           )
         })
 
diff --git a/test/markdown/style/parse.js b/test/markdown/style/parse.js
index 015ed622..7db4934d 100644
--- a/test/markdown/style/parse.js
+++ b/test/markdown/style/parse.js
@@ -65,7 +65,9 @@ describe('Marpit style parse plugin', () => {
 
         it('parses scoped attribute with another attribute', () => {
           const [token] = pickStyles(
-            markdown.parse(`<style id="foobar" scoped type='text/css'></style>`)
+            markdown.parse(
+              `<style id="foobar" scoped type='text/css'></style>`,
+            ),
           )
           expect(token.meta.marpitStyleScoped).toBe(true)
         })
diff --git a/test/markdown/sweep.js b/test/markdown/sweep.js
index 515ad905..6ea52d13 100644
--- a/test/markdown/sweep.js
+++ b/test/markdown/sweep.js
@@ -48,7 +48,7 @@ describe('Marpit sweep plugin', () => {
         ![notBg](keep)
 
         ![bg](keep) with contents
-      `)
+      `),
     )
 
     expect($('p')).toHaveLength(2)
diff --git a/test/marpit.js b/test/marpit.js
index 004359ec..1d73716b 100644
--- a/test/marpit.js
+++ b/test/marpit.js
@@ -112,7 +112,7 @@ describe('Marpit', () => {
 
         // Local directive (Alias + internal meta)
         const [localFirst, , , localSecond] = marpit.markdown.parse(
-          '<!-- test: local -->\n***\n<!-- _test: spot -->'
+          '<!-- test: local -->\n***\n<!-- _test: spot -->',
         )
         expect(localFirst.meta.marpitDirectives).toStrictEqual({
           test: 'local',
@@ -177,7 +177,7 @@ describe('Marpit', () => {
         expect(opts.containers[0].tag).toBe('div')
         expect(opts.containers[0].class).toBe('marpit')
         expect(opts.inlineSVG).toStrictEqual(
-          expect.objectContaining({ enabled: false })
+          expect.objectContaining({ enabled: false }),
         )
         expect(opts.printable).toBe(true)
         return 'CSS'
@@ -200,7 +200,7 @@ describe('Marpit', () => {
         expect(render).toBeCalledWith(
           expect.any(Array),
           instance.markdown.options,
-          { env: 'env' }
+          { env: 'env' },
         )
       })
 
@@ -283,7 +283,7 @@ describe('Marpit', () => {
         return findBackdropRules(css).then((rules) => {
           expect(rules).toHaveLength(2)
           expect(
-            rules.find((r) => r.selector.endsWith('svg[data-marpit-svg]'))
+            rules.find((r) => r.selector.endsWith('svg[data-marpit-svg]')),
           ).toBeTruthy()
         })
       })
@@ -313,14 +313,14 @@ describe('Marpit', () => {
         () => {
           it('does not redirects ::backdrop selector to container SVG', () => {
             const { css } = instance({ backdropSelector: false }).render(
-              backdropStyle
+              backdropStyle,
             )
 
             return findBackdropRules(css).then((rules) => {
               expect(rules).toHaveLength(1)
             })
           })
-        }
+        },
       )
     })
 
@@ -333,7 +333,7 @@ describe('Marpit', () => {
           .then((ret) =>
             ret.root.walkDecls('background-image', (decl) => {
               expect(decl.value).toBe('url("test")')
-            })
+            }),
           )
       })
     })
@@ -397,7 +397,7 @@ describe('Marpit', () => {
 
         expect($('style')).toHaveLength(0)
         expect(rendered.css.trim().endsWith('{ --style: appended; }')).toBe(
-          true
+          true,
         )
         expect(rendered.css).toContain('/* @import "valid-theme"; */')
       })
@@ -411,7 +411,7 @@ describe('Marpit', () => {
 
           expect(css).toContain('[data-marpit-scope-')
           expect(Object.keys($('section').attr())).toContainEqual(
-            expect.stringMatching(/^data-marpit-scope-/)
+            expect.stringMatching(/^data-marpit-scope-/),
           )
         })
       })
@@ -517,7 +517,7 @@ describe('Marpit', () => {
       instance.themeSet.add('/* @theme test */ :root { background: red; }')
 
       expect(instance.renderStyle('test')).toContain(
-        'div.marpit > :where(section)'
+        'div.marpit > :where(section)',
       )
     })
   })
diff --git a/test/plugin.js b/test/plugin.js
index 0096e507..7470f3b9 100644
--- a/test/plugin.js
+++ b/test/plugin.js
@@ -30,7 +30,7 @@ describe('Plugin interface', () => {
     const plugin = marpitPlugin(jest.fn())
 
     expect(() => new markdownIt().use(plugin)).toThrowError(
-      'Marpit plugin has detected incompatible markdown-it instance.'
+      'Marpit plugin has detected incompatible markdown-it instance.',
     )
   })
 })
diff --git a/test/postcss/import/hoisting.js b/test/postcss/import/hoisting.js
index 3151f606..142e441c 100644
--- a/test/postcss/import/hoisting.js
+++ b/test/postcss/import/hoisting.js
@@ -24,11 +24,11 @@ describe('Marpit PostCSS import hoisting plugin', () => {
 
   it('rolls up invalid @charset rule', () =>
     run('h1 { color: red; }\n@charset "utf-8";').then(({ css }) =>
-      expect(css).toBe('@charset "utf-8";\nh1 { color: red; }')
+      expect(css).toBe('@charset "utf-8";\nh1 { color: red; }'),
     ))
 
   it('applies the first rule when style has multiple @charset rules', () =>
     run('h1 { color: red; }\n@charset "utf-16";\n@charset "utf-8";').then(
-      ({ css }) => expect(css).toBe('@charset "utf-16";\nh1 { color: red; }')
+      ({ css }) => expect(css).toBe('@charset "utf-16";\nh1 { color: red; }'),
     ))
 })
diff --git a/test/postcss/import/parse.js b/test/postcss/import/parse.js
index ce42bc0e..2dc9d3c9 100644
--- a/test/postcss/import/parse.js
+++ b/test/postcss/import/parse.js
@@ -19,7 +19,7 @@ describe('Marpit PostCSS import parse plugin', () => {
 
         expect(imported.node.type).toBe('atrule')
         expect(imported.value).toBe('theme')
-      }
+      },
     ))
 
   it('parses multiple @import rules', () =>
@@ -42,16 +42,16 @@ describe('Marpit PostCSS import parse plugin', () => {
 
   it('does not parse @import rule when it specifies URL data type', () =>
     run("@import url('https://example.com/example.css')").then((result) =>
-      expect(result.marpitImport).toHaveLength(0)
+      expect(result.marpitImport).toHaveLength(0),
     ))
 
   it('does not parse @import rule when it is not preceded any rules', () =>
     Promise.all([
       run("b { color: red; }\n@import 'theme';").then((result) =>
-        expect(result.marpitImport).toHaveLength(0)
+        expect(result.marpitImport).toHaveLength(0),
       ),
       run("@keyframes {}\n@import 'theme';").then((result) =>
-        expect(result.marpitImport).toHaveLength(0)
+        expect(result.marpitImport).toHaveLength(0),
       ),
     ]))
 })
diff --git a/test/postcss/import/replace.js b/test/postcss/import/replace.js
index e37e5a34..94ed3f9c 100644
--- a/test/postcss/import/replace.js
+++ b/test/postcss/import/replace.js
@@ -21,7 +21,7 @@ describe('Marpit PostCSS import replace plugin', () => {
 
   it('imports another theme', () =>
     run('@import "imported";\n\nsection { width: 100px; }').then(({ css }) =>
-      expect(css).toBe('h1 { font-size: 3em; }\n\nsection { width: 100px; }')
+      expect(css).toBe('h1 { font-size: 3em; }\n\nsection { width: 100px; }'),
     ))
 
   it('supports nested import', () =>
@@ -30,23 +30,23 @@ describe('Marpit PostCSS import replace plugin', () => {
         h3 { font-size: 1em; }
         h2 { font-size: 2em; }
         h1 { font-size: 10em; }
-      `)
+      `),
     ))
 
   it('ignores when the specified theme is not defined in ThemeSet', () =>
     run('@import "unknown";').then(({ css }) =>
-      expect(css).toBe('@import "unknown";')
+      expect(css).toBe('@import "unknown";'),
     ))
 
   context('with using @import-theme rule', () => {
     it('imports to the beginning of CSS', () =>
       run('body { color: red; }\n\n@import-theme "imported"').then(({ css }) =>
-        expect(css).toBe('h1 { font-size: 3em; }\nbody { color: red; }')
+        expect(css).toBe('h1 { font-size: 3em; }\nbody { color: red; }'),
       ))
 
     it('ignores when the rule is contained in selector', () =>
       run('body { @import-theme "imported"; }').then(({ css }) =>
-        expect(css).toBe('body { @import-theme "imported"; }')
+        expect(css).toBe('body { @import-theme "imported"; }'),
       ))
   })
 
@@ -72,10 +72,10 @@ describe('Marpit PostCSS import replace plugin', () => {
   it('throws error when circular import is detected', () =>
     Promise.all([
       expect(run('@import "circular"')).rejects.toThrow(
-        'Circular "circular" theme import is detected.'
+        'Circular "circular" theme import is detected.',
       ),
       expect(run('@import "nested-circular"')).rejects.toThrow(
-        'Circular "nested-circular" theme import is detected.'
+        'Circular "nested-circular" theme import is detected.',
       ),
     ]))
 })
diff --git a/test/postcss/import/suppress.js b/test/postcss/import/suppress.js
index 5a3f793d..271b4adf 100644
--- a/test/postcss/import/suppress.js
+++ b/test/postcss/import/suppress.js
@@ -11,8 +11,8 @@ describe('Marpit PostCSS import suppress plugin', () => {
   it('comments out @import and @import-theme rules with valid theme', () =>
     run('@import "imported";\n@import-theme "imported";').then(({ css }) =>
       expect(css).toBe(
-        '/* @import "imported"; */\n/* @import-theme "imported"; */'
-      )
+        '/* @import "imported"; */\n/* @import-theme "imported"; */',
+      ),
     ))
 
   it('ignores @import and @import-theme rules with invalid theme', () => {
diff --git a/test/postcss/pagination.js b/test/postcss/pagination.js
index 16d2ec2f..0efad407 100644
--- a/test/postcss/pagination.js
+++ b/test/postcss/pagination.js
@@ -10,80 +10,80 @@ describe('Marpit PostCSS pagination plugin', () => {
   it('comments out the content declaration of section::after not for pagination', () =>
     Promise.all([
       expect(run("section::after { content: 'test'; }")).resolves.toBe(
-        "section::after { /* content: 'test'; */ }"
+        "section::after { /* content: 'test'; */ }",
       ),
       expect(run("section:after { content: 'test'; }")).resolves.toBe(
-        "section:after { /* content: 'test'; */ }"
+        "section:after { /* content: 'test'; */ }",
       ),
     ]))
 
   it('comments out the content declaration of section::after with id/class selector', () =>
     Promise.all([
       expect(run("section#id::after { content: ''; }")).resolves.toBe(
-        "section#id::after { /* content: ''; */ }"
+        "section#id::after { /* content: ''; */ }",
       ),
       expect(run("section.class::after { content: ''; }")).resolves.toBe(
-        "section.class::after { /* content: ''; */ }"
+        "section.class::after { /* content: ''; */ }",
       ),
     ]))
 
   it('comments out the content declaration of section::after with attribute selector', () =>
     Promise.all([
       expect(run("section[abc='1']::after { content: ''; }")).resolves.toBe(
-        "section[abc='1']::after { /* content: ''; */ }"
+        "section[abc='1']::after { /* content: ''; */ }",
       ),
       expect(run("section[abc][def]::after { content: ''; }")).resolves.toBe(
-        "section[abc][def]::after { /* content: ''; */ }"
+        "section[abc][def]::after { /* content: ''; */ }",
       ),
       expect(run('section[a*="b"]::after { content: \'\'; }')).resolves.toBe(
-        'section[a*="b"]::after { /* content: \'\'; */ }'
+        'section[a*="b"]::after { /* content: \'\'; */ }',
       ),
     ]))
 
   it('comments out the content declaration of section::after with pseudo-class', () =>
     Promise.all([
       expect(run("section:hover::after { content: ''; }")).resolves.toBe(
-        "section:hover::after { /* content: ''; */ }"
+        "section:hover::after { /* content: ''; */ }",
       ),
       expect(run("section:not(:empty)::after { content: ''; }")).resolves.toBe(
-        "section:not(:empty)::after { /* content: ''; */ }"
+        "section:not(:empty)::after { /* content: ''; */ }",
       ),
     ]))
 
   it('keeps the content declaration of section::after for pagination', () =>
     Promise.all([
       expect(
-        run('section::after { content: attr(data-marpit-pagination); }')
+        run('section::after { content: attr(data-marpit-pagination); }'),
       ).resolves.toBe(
-        'section::after { content: attr(data-marpit-pagination); }'
+        'section::after { content: attr(data-marpit-pagination); }',
       ),
       expect(
         run(
-          'section::after { content: attr(data-marpit-pagination) "/" attr(data-marpit-pagination-total); }'
-        )
+          'section::after { content: attr(data-marpit-pagination) "/" attr(data-marpit-pagination-total); }',
+        ),
       ).resolves.toBe(
-        'section::after { content: attr(data-marpit-pagination) "/" attr(data-marpit-pagination-total); }'
+        'section::after { content: attr(data-marpit-pagination) "/" attr(data-marpit-pagination-total); }',
       ),
     ]))
 
   it('keeps the content declaration of section::after with combinators', () =>
     Promise.all([
       expect(run("section div::after { content: ''; }")).resolves.toBe(
-        "section div::after { content: ''; }"
+        "section div::after { content: ''; }",
       ),
       expect(run("section > div::after { content: ''; }")).resolves.toBe(
-        "section > div::after { content: ''; }"
+        "section > div::after { content: ''; }",
       ),
       expect(run("section+section::after { content: ''; }")).resolves.toBe(
-        "section+section::after { content: ''; }"
+        "section+section::after { content: ''; }",
       ),
       expect(run("section~p::after { content: ''; }")).resolves.toBe(
-        "section~p::after { content: ''; }"
+        "section~p::after { content: ''; }",
       ),
     ]))
 
   it('keeps the content declaration of section-like-element::after', () =>
     expect(run("section-like-element::after { content: ''; }")).resolves.toBe(
-      "section-like-element::after { content: ''; }"
+      "section-like-element::after { content: ''; }",
     ))
 })
diff --git a/test/postcss/pseudo_selector/replace.js b/test/postcss/pseudo_selector/replace.js
index 2905c598..e4f8ab7a 100644
--- a/test/postcss/pseudo_selector/replace.js
+++ b/test/postcss/pseudo_selector/replace.js
@@ -52,7 +52,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div')
 
         return run(css, container).then((result) =>
-          expect(result.root.first.selector).toBe('div > section')
+          expect(result.root.first.selector).toBe('div > section'),
         )
       })
     })
@@ -62,7 +62,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const containers = [new Element('div'), new Element('span')]
 
         return run(css, containers).then((result) =>
-          expect(result.root.first.selector).toBe('div > span > section')
+          expect(result.root.first.selector).toBe('div > span > section'),
         )
       })
 
@@ -75,8 +75,8 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
 
         return run(css, containers).then((result) =>
           expect(result.root.first.selector).toBe(
-            'marp\\.custom-element > emotion-\\1F60D > section'
-          )
+            'marp\\.custom-element > emotion-\\1F60D > section',
+          ),
         )
       })
     })
@@ -86,7 +86,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div', { class: 'foo bar' })
 
         return run(css, container).then((result) =>
-          expect(result.root.first.selector).toBe('div.foo.bar > section')
+          expect(result.root.first.selector).toBe('div.foo.bar > section'),
         )
       })
 
@@ -94,7 +94,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div', { class: 'one two one' })
 
         return run(css, container).then((result) =>
-          expect(result.root.first.selector).toBe('div.one.two > section')
+          expect(result.root.first.selector).toBe('div.one.two > section'),
         )
       })
 
@@ -103,8 +103,8 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
 
         return run(css, container).then((result) =>
           expect(result.root.first.selector).toBe(
-            'div.\\31 23.\\.foo\\.bar.\\#test > section'
-          )
+            'div.\\31 23.\\.foo\\.bar.\\#test > section',
+          ),
         )
       })
     })
@@ -114,7 +114,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div', { id: 'identifier' })
 
         return run(css, container).then((result) =>
-          expect(result.root.first.selector).toBe('div#identifier > section')
+          expect(result.root.first.selector).toBe('div#identifier > section'),
         )
       })
 
@@ -122,7 +122,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div', { class: 'one two', id: 'id' })
 
         return run(css, container).then((result) =>
-          expect(result.root.first.selector).toBe('div.one.two#id > section')
+          expect(result.root.first.selector).toBe('div.one.two#id > section'),
         )
       })
 
@@ -131,8 +131,8 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
 
         return run(css, container).then((result) =>
           expect(result.root.first.selector).toBe(
-            'div#\\30 123\\<\\#\\>4567 > section'
-          )
+            'div#\\30 123\\<\\#\\>4567 > section',
+          ),
         )
       })
     })
@@ -144,7 +144,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
     context('when slide element is null', () => {
       it('remove pseudo elements', () =>
         run(css, undefined, null).then((result) =>
-          expect(result.root.first.selector).toBe('h1')
+          expect(result.root.first.selector).toBe('h1'),
         ))
     })
 
@@ -153,7 +153,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div')
 
         return run(css, undefined, container).then((result) =>
-          expect(result.root.first.selector).toBe('div h1')
+          expect(result.root.first.selector).toBe('div h1'),
         )
       })
     })
@@ -163,7 +163,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const containers = [new Element('svg'), new Element('foreignObject')]
 
         return run(css, undefined, containers).then((result) =>
-          expect(result.root.first.selector).toBe('svg > foreignObject h1')
+          expect(result.root.first.selector).toBe('svg > foreignObject h1'),
         )
       })
 
@@ -175,8 +175,8 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
 
         return run(css, undefined, containers).then((result) =>
           expect(result.root.first.selector).toBe(
-            'marp\\.custom-element > emotion-\\1F60D h1'
-          )
+            'marp\\.custom-element > emotion-\\1F60D h1',
+          ),
         )
       })
     })
@@ -186,7 +186,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div', { class: 'foo bar' })
 
         return run(css, undefined, container).then((result) =>
-          expect(result.root.first.selector).toBe('div.foo.bar h1')
+          expect(result.root.first.selector).toBe('div.foo.bar h1'),
         )
       })
 
@@ -194,7 +194,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div', { class: 'one two one' })
 
         return run(css, undefined, container).then((result) =>
-          expect(result.root.first.selector).toBe('div.one.two h1')
+          expect(result.root.first.selector).toBe('div.one.two h1'),
         )
       })
 
@@ -203,8 +203,8 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
 
         return run(css, undefined, container).then((result) =>
           expect(result.root.first.selector).toBe(
-            'div.\\31 23.\\.foo\\.bar.\\#test h1'
-          )
+            'div.\\31 23.\\.foo\\.bar.\\#test h1',
+          ),
         )
       })
     })
@@ -214,7 +214,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div', { id: 'identifier' })
 
         return run(css, undefined, container).then((result) =>
-          expect(result.root.first.selector).toBe('div#identifier h1')
+          expect(result.root.first.selector).toBe('div#identifier h1'),
         )
       })
 
@@ -222,7 +222,7 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
         const container = new Element('div', { class: 'one two', id: 'id' })
 
         return run(css, undefined, container).then((result) =>
-          expect(result.root.first.selector).toBe('div.one.two#id h1')
+          expect(result.root.first.selector).toBe('div.one.two#id h1'),
         )
       })
 
@@ -231,8 +231,8 @@ describe('Marpit PostCSS pseudo selector replace plugin', () => {
 
         return run(css, undefined, container).then((result) =>
           expect(result.root.first.selector).toBe(
-            'div#\\30 123\\<\\#\\>4567 h1'
-          )
+            'div#\\30 123\\<\\#\\>4567 h1',
+          ),
         )
       })
     })
diff --git a/test/postcss/root/font_size.js b/test/postcss/root/font_size.js
index 5ab4d1cb..f6dd305e 100644
--- a/test/postcss/root/font_size.js
+++ b/test/postcss/root/font_size.js
@@ -21,19 +21,19 @@ describe('CSS variable injection', () => {
 
     // With combinator
     expect(run('section.klass { font-size: 16px; }').css).toContain(
-      `section.klass { ${rootFontSizeCustomProp}: 16px; }`
+      `section.klass { ${rootFontSizeCustomProp}: 16px; }`,
     )
     expect(run('section#id { font-size: 16px; }').css).toContain(
-      `section#id { ${rootFontSizeCustomProp}: 16px; }`
+      `section#id { ${rootFontSizeCustomProp}: 16px; }`,
     )
     expect(run('section[data-header] { font-size: 16px; }').css).toContain(
-      `section[data-header] { ${rootFontSizeCustomProp}: 16px; }`
+      `section[data-header] { ${rootFontSizeCustomProp}: 16px; }`,
     )
     expect(run('section:hover { font-size: 16px; }').css).toContain(
-      `section:hover { ${rootFontSizeCustomProp}: 16px; }`
+      `section:hover { ${rootFontSizeCustomProp}: 16px; }`,
     )
     expect(run('section::after { font-size: 16px; }').css).toContain(
-      `section::after { ${rootFontSizeCustomProp}: 16px; }`
+      `section::after { ${rootFontSizeCustomProp}: 16px; }`,
     )
 
     // Universal selector in modularized transform (explicit and implicit)
@@ -57,7 +57,7 @@ describe('CSS variable injection', () => {
       section>section { ${rootFontSizeCustomProp}: 16px; }
     `
     expect(runWithModularize('section>section { font-size: 16px; }').css).toBe(
-      nested
+      nested,
     )
   })
 
@@ -69,7 +69,7 @@ describe('CSS variable injection', () => {
           font-size: 1rem;
           font-size: 18px !important;
         }
-      `).css
+      `).css,
     ).toBe(dedent`
       section {
         font-size: 16px;
diff --git a/test/postcss/root/increasing_specificity.js b/test/postcss/root/increasing_specificity.js
index 861392eb..ebe5c505 100644
--- a/test/postcss/root/increasing_specificity.js
+++ b/test/postcss/root/increasing_specificity.js
@@ -12,16 +12,16 @@ describe('Marpit PostCSS root increasing specificity plugin', () => {
 
   it('replaces specific pseudo-class into ":where(section):not([\\20 root])" to increase specificity', () => {
     expect(run(`section${pseudoClass} {}`).css).toBe(
-      ':where(section):not([\\20 root]) {}'
+      ':where(section):not([\\20 root]) {}',
     )
 
     // With replaced :root selector via root replace plugin
     expect(run(`:root {}`).css).toBe(':where(section):not([\\20 root]) {}')
     expect(run(`section :root {}`).css).toBe(
-      'section :where(section):not([\\20 root]) {}'
+      'section :where(section):not([\\20 root]) {}',
     )
     expect(run(`:root.klass div {}`).css).toBe(
-      ':where(section):not([\\20 root]).klass div {}'
+      ':where(section):not([\\20 root]).klass div {}',
     )
   })
 })
diff --git a/test/postcss/root/rem.js b/test/postcss/root/rem.js
index cc1def3f..2f61de87 100644
--- a/test/postcss/root/rem.js
+++ b/test/postcss/root/rem.js
@@ -8,23 +8,23 @@ describe('Marpit PostCSS rem plugin', () => {
 
   it('replaces rem unit in all declarations into calculated value', () => {
     expect(run('h1 { font-size: 2rem; }').css).toBe(
-      `h1 { font-size: calc(var(${rootFontSizeCustomProp}, 1rem) * 2); }`
+      `h1 { font-size: calc(var(${rootFontSizeCustomProp}, 1rem) * 2); }`,
     )
 
     expect(
       run(dedent`
         h2 { font-size: 1.5rem; }
         h3 { font-size: .9rem; }
-      `).css
+      `).css,
     ).toBe(dedent`
       h2 { font-size: calc(var(${rootFontSizeCustomProp}, 1rem) * 1.5); }
       h3 { font-size: calc(var(${rootFontSizeCustomProp}, 1rem) * .9); }
     `)
 
     expect(
-      run('@media screen { h4 { height: calc(12px + .6rem); } }').css
+      run('@media screen { h4 { height: calc(12px + .6rem); } }').css,
     ).toBe(
-      `@media screen { h4 { height: calc(12px + calc(var(${rootFontSizeCustomProp}, 1rem) * .6)); } }`
+      `@media screen { h4 { height: calc(12px + calc(var(${rootFontSizeCustomProp}, 1rem) * .6)); } }`,
     )
   })
 
@@ -37,7 +37,7 @@ describe('Marpit PostCSS rem plugin', () => {
 
     // The case of mixed
     expect(run("section { font: regular 2rem '2rem font'; }").css).toBe(
-      `section { font: regular calc(var(${rootFontSizeCustomProp}, 1rem) * 2) '2rem font'; }`
+      `section { font: regular calc(var(${rootFontSizeCustomProp}, 1rem) * 2) '2rem font'; }`,
     )
   })
 
diff --git a/test/postcss/root/replace.js b/test/postcss/root/replace.js
index 55e85e98..78e666d4 100644
--- a/test/postcss/root/replace.js
+++ b/test/postcss/root/replace.js
@@ -11,50 +11,50 @@ describe('Marpit PostCSS root replace plugin', () => {
 
     // Various usages of :root selector
     expect(run(':root :root { --bg: #fff; }').css).toBe(
-      'section section { --bg: #fff; }'
+      'section section { --bg: #fff; }',
     )
     expect(run(':marpit-slide>:root { --bg: #fff; }').css).toBe(
-      ':marpit-slide>section { --bg: #fff; }'
+      ':marpit-slide>section { --bg: #fff; }',
     )
     expect(run(':root+:root { --bg: #fff; }').css).toBe(
-      'section+section { --bg: #fff; }'
+      'section+section { --bg: #fff; }',
     )
     expect(run(':root.klass~:root { --bg: #fff; }').css).toBe(
-      'section.klass~section { --bg: #fff; }'
+      'section.klass~section { --bg: #fff; }',
     )
     expect(run(':root:not(:root.klass) { --bg: #fff; }').css).toBe(
-      'section:not(section.klass) { --bg: #fff; }'
+      'section:not(section.klass) { --bg: #fff; }',
     )
     expect(
       run(dedent`
         @media screen {
           :root { --bg: #fff; }
         }
-      `).css
+      `).css,
     ).toContain('section { --bg: #fff; }')
     expect(
       run(dedent`
         @supports (--foo: bar) {
           :root { --bg: #fff; }
         }
-      `).css
+      `).css,
     ).toContain('section { --bg: #fff; }')
 
     // "section:root" also replaces into "section"
     expect(run('section:root { --bg: #fff; }').css).toBe(
-      'section { --bg: #fff; }'
+      'section { --bg: #fff; }',
     )
   })
 
   it('does not replace ":root" in non-selector', () => {
     expect(run('p[data-value=":root"] { --bg: #fff; }').css).toBe(
-      'p[data-value=":root"] { --bg: #fff; }'
+      'p[data-value=":root"] { --bg: #fff; }',
     )
   })
 
   it('leaves :root selector for other elements', () => {
     expect(run('html:root :root { --bg: #fff; }').css).toBe(
-      'html:root section { --bg: #fff; }'
+      'html:root section { --bg: #fff; }',
     )
   })
 })
diff --git a/test/postcss/section_size.js b/test/postcss/section_size.js
index 97053ac5..cd8c0c47 100644
--- a/test/postcss/section_size.js
+++ b/test/postcss/section_size.js
@@ -16,7 +16,7 @@ describe('Marpit PostCSS section size plugin', () => {
       expect(result.marpitSectionSize).toStrictEqual({
         width: '123px',
         height: '456px',
-      })
+      }),
     ))
 
   it('supports grouping selector', () =>
@@ -24,12 +24,12 @@ describe('Marpit PostCSS section size plugin', () => {
       expect(result.marpitSectionSize).toStrictEqual({
         width: '234px',
         height: '567px',
-      })
+      }),
     ))
 
   it('ignores section selector with pusedo selector', () =>
     run('section:first-child { width: 123px; height: 456px; }').then((result) =>
-      expect(result.marpitSectionSize).toStrictEqual({})
+      expect(result.marpitSectionSize).toStrictEqual({}),
     ))
 
   context('with preferedPseudoClass', () => {
@@ -40,12 +40,12 @@ describe('Marpit PostCSS section size plugin', () => {
 
     it('prefers defined size within section selector with specific pseudo selector than plain selector', () =>
       run(
-        'section:test { width: 123px; height: 123px; } section { width: 456px; height: 456px; } '
+        'section:test { width: 123px; height: 123px; } section { width: 456px; height: 456px; } ',
       ).then((result) =>
         expect(result.marpitSectionSize).toStrictEqual({
           width: '123px',
           height: '123px',
-        })
+        }),
       ))
   })
 })
diff --git a/test/postcss/svg_backdrop.js b/test/postcss/svg_backdrop.js
index d0fd8eb1..07a88ef8 100644
--- a/test/postcss/svg_backdrop.js
+++ b/test/postcss/svg_backdrop.js
@@ -14,7 +14,7 @@ describe('Marpit PostCSS SVG backdrop plugin', () => {
       expect(redirected.name).toBe('media')
       expect(redirected.params).toBe('screen')
       expect(redirected.nodes.toString()).toMatchInlineSnapshot(
-        `":marpit-container > svg[data-marpit-svg] { background: white; }"`
+        `":marpit-container > svg[data-marpit-svg] { background: white; }"`,
       )
     }))
 })
diff --git a/test/theme.js b/test/theme.js
index 1c35665c..0dbab347 100644
--- a/test/theme.js
+++ b/test/theme.js
@@ -25,7 +25,7 @@ describe('Theme', () => {
 
       it('throws error', () =>
         expect(() => Theme.fromCSS(css)).toThrow(
-          'Marpit theme CSS requires @theme meta.'
+          'Marpit theme CSS requires @theme meta.',
         ))
 
       context('with specified internal symbol for skipping validation', () => {
@@ -102,7 +102,7 @@ describe('Theme', () => {
              * @unknown B
              */
           `,
-          { metaType: { string: String, array: Array } }
+          { metaType: { string: String, array: Array } },
         )
 
         expect(instance.meta.string).toBe('B')
@@ -118,7 +118,7 @@ describe('Theme', () => {
              * @theme B
              */
           `,
-          { metaType: { theme: Array } }
+          { metaType: { theme: Array } },
         )
 
         expect(instance.meta.theme).toStrictEqual('B')
diff --git a/test/theme_set.js b/test/theme_set.js
index ca1e3f1f..ec3976a1 100644
--- a/test/theme_set.js
+++ b/test/theme_set.js
@@ -75,12 +75,12 @@ describe('ThemeSet', () => {
 
     it('throws error when passed theme is not an instance of Theme', () =>
       expect(() => instance.addTheme('/* @theme test-theme */')).toThrow(
-        'ThemeSet can add only an instance of Theme.'
+        'ThemeSet can add only an instance of Theme.',
       ))
 
     it('throws error when passed theme has not name', () => {
       expect(() => instance.addTheme(new Theme(undefined, ''))).toThrow(
-        'An instance of Theme requires name.'
+        'An instance of Theme requires name.',
       )
     })
 
@@ -155,14 +155,14 @@ describe('ThemeSet', () => {
     beforeEach(() => {
       arrayMetaTheme = Theme.fromCSS(
         '/* @theme array-meta */\n/* @array A */\n/* @array B */',
-        { metaType: { array: Array } }
+        { metaType: { array: Array } },
       )
 
       // Meta value
       instance.add('/* @theme meta */\n/* @meta-value A */')
       instance.add('/* @theme meta-imported */\n@import "meta";')
       instance.add(
-        '/* @theme meta-override */\n/* @meta-value B */\n@import "meta";'
+        '/* @theme meta-override */\n/* @meta-value B */\n@import "meta";',
       )
 
       // Array meta
@@ -170,23 +170,23 @@ describe('ThemeSet', () => {
       instance.addTheme(
         Theme.fromCSS(
           '/* @theme array-meta-imported */\n/* @array C */\n@import "array-meta";',
-          { metaType: { array: Array } }
-        )
+          { metaType: { array: Array } },
+        ),
       )
       instance.addTheme(
         Theme.fromCSS(
           '/* @theme array-meta-double-imported */\n/* @array D */\n@import "array-meta-imported";',
-          { metaType: { array: Array } }
-        )
+          { metaType: { array: Array } },
+        ),
       )
       instance.add(
-        '/* @theme array-meta-override-by-string */\n/* @array str */\n@import "array-meta";'
+        '/* @theme array-meta-override-by-string */\n/* @array str */\n@import "array-meta";',
       )
       instance.addTheme(
         Theme.fromCSS(
           '/* @theme string-meta-override-by-array */\n/* @meta-value B */\n/* @meta-value C */\n@import "meta";',
-          { metaType: { 'meta-value': Array } }
-        )
+          { metaType: { 'meta-value': Array } },
+        ),
       )
     })
 
@@ -227,7 +227,7 @@ describe('ThemeSet', () => {
           'C',
         ])
         expect(
-          getThemeMeta('array-meta-double-imported', 'array')
+          getThemeMeta('array-meta-double-imported', 'array'),
         ).toStrictEqual(['A', 'B', 'C', 'D'])
       })
     })
@@ -237,13 +237,13 @@ describe('ThemeSet', () => {
       () => {
         it('returns the meta value only from a primary theme', () => {
           expect(getThemeMeta('array-meta-override-by-string', 'array')).toBe(
-            'str'
+            'str',
           )
           expect(
-            getThemeMeta('string-meta-override-by-array', 'meta-value')
+            getThemeMeta('string-meta-override-by-array', 'meta-value'),
           ).toStrictEqual(['B', 'C'])
         })
-      }
+      },
     )
   })
 
@@ -343,10 +343,10 @@ describe('ThemeSet', () => {
 
       it('throws error when circular import is detected', () => {
         expect(() => getThemeProp('circular-import', 'width')).toThrow(
-          'Circular "circular-import" theme import is detected.'
+          'Circular "circular-import" theme import is detected.',
         )
         expect(() => getThemeProp('nested-circular', 'width')).toThrow(
-          'Circular "nested-circular" theme import is detected.'
+          'Circular "nested-circular" theme import is detected.',
         )
       })
 
@@ -411,7 +411,7 @@ describe('ThemeSet', () => {
 
         expect(printCSS.split('@media print').length - 1).toBe(2)
         expect(printCSS).toContain(
-          '@media print { section body { background: red; } }'
+          '@media print { section body { background: red; } }',
         )
 
         // `@media marpit-print` internal at-rule will remove.