Use .mjs extn for module entry & strip comments (#1166)

Change dist module extension to .mjs and strip comments.

config/rollup.config.js

@@ -27,6 +27,7 @@ export default {
 			sourceMap: true,
 			exclude: 'node_modules/**',
 			babelrc: false,
+			comments: false,
 			presets: [
 				['env', {
 					modules: false,

config/rollup.config.esm.js → config/rollup.config.module.js

@@ -2,7 +2,7 @@ import config from './rollup.config';
 
 // ES output
 config.output.format = 'es';
-config.output.file = 'dist/preact.esm.js';
+config.output.file = 'dist/preact.mjs';
 
 // remove memory() plugin
 config.plugins.splice(0, 1);

package.json

@@ -3,8 +3,8 @@
   "version": "8.2.9",
   "description": "Fast 3kb React alternative with the same modern API. Components & Virtual DOM.",
   "main": "dist/preact.js",
-  "jsnext:main": "dist/preact.esm.js",
-  "module": "dist/preact.esm.js",
+  "jsnext:main": "dist/preact.mjs",
+  "module": "dist/preact.mjs",
   "dev:main": "dist/preact.dev.js",
   "minified:main": "dist/preact.min.js",
   "types": "dist/preact.d.ts",
@@ -16,13 +16,13 @@
     "flow": "flow",
     "transpile:main": "rollup -c config/rollup.config.js",
     "transpile:devtools": "rollup -c config/rollup.config.devtools.js",
-    "transpile:esm": "rollup -c config/rollup.config.esm.js",
+    "transpile:esm": "rollup -c config/rollup.config.module.js",
     "transpile:debug": "babel debug/ -o debug.js -s",
     "transpile": "npm-run-all transpile:main transpile:esm transpile:devtools transpile:debug",
     "optimize": "uglifyjs dist/preact.dev.js -c conditionals=false,sequences=false,loops=false,join_vars=false,collapse_vars=false --pure-funcs=Object.defineProperty --mangle-props --mangle-regex=\"/^(_|normalizedNodeName|nextBase|prev[CPS]|_parentC)/\" --name-cache config/properties.json -b width=120,quote_style=3 -o dist/preact.js -p relative --in-source-map dist/preact.dev.js.map --source-map dist/preact.js.map",
     "minify": "uglifyjs dist/preact.js -c collapse_vars,evaluate,screw_ie8,unsafe,loops=false,keep_fargs=false,pure_getters,unused,dead_code -m -o dist/preact.min.js -p relative --in-source-map dist/preact.js.map --source-map dist/preact.min.js.map",
     "strip:main": "jscodeshift --run-in-band -s -t config/codemod-strip-tdz.js dist/preact.dev.js && jscodeshift --run-in-band -s -t config/codemod-const.js dist/preact.dev.js && jscodeshift --run-in-band -s -t config/codemod-let-name.js dist/preact.dev.js",
-    "strip:esm": "jscodeshift --run-in-band -s -t config/codemod-strip-tdz.js dist/preact.esm.js && jscodeshift --run-in-band -s -t config/codemod-const.js dist/preact.esm.js && jscodeshift --run-in-band -s -t config/codemod-let-name.js dist/preact.esm.js",
+    "strip:esm": "jscodeshift --run-in-band -s -t config/codemod-strip-tdz.js dist/preact.mjs && jscodeshift --run-in-band -s -t config/codemod-const.js dist/preact.mjs && jscodeshift --run-in-band -s -t config/codemod-let-name.js dist/preact.mjs",
     "strip": "npm-run-all strip:main strip:esm",
     "size": "node -e \"process.stdout.write('gzip size: ')\" && gzip-size --raw dist/preact.min.js",
     "test": "npm-run-all lint --parallel test:mocha test:karma test:ts test:flow test:size",