fix: skip missing scripts(test or build)

packages/shipjs/src/step/release/__tests__/runBuild.spec.js

@@ -1,5 +1,5 @@
 import runBuild from '../runBuild';
-import { run } from '../../../util';
+import { run, print } from '../../../util';
 
 describe('runBuild', () => {
   it('works', () => {
@@ -19,4 +19,48 @@ describe('runBuild', () => {
       }
     `);
   });
+
+  it('skips build if buildCommand is falsy', () => {
+    runBuild({
+      config: {
+        buildCommand: null,
+      },
+      dir: '.',
+      dryRun: false,
+    });
+    expect(run).toHaveBeenCalledTimes(0);
+    expect(print).toHaveBeenCalledTimes(2);
+    expect(print.mock.calls).toMatchInlineSnapshot(`
+      Array [
+        Array [
+          "› Building.",
+        ],
+        Array [
+          "Skipping build because it is not configured.",
+        ],
+      ]
+    `);
+  });
+
+  it('skips build if buildCommand returns falsy', () => {
+    runBuild({
+      config: {
+        buildCommand: () => '',
+      },
+      dir: '.',
+      dryRun: false,
+    });
+    expect(run).toHaveBeenCalledTimes(0);
+    expect(print).toHaveBeenCalledTimes(2);
+    expect(print.mock.calls).toMatchInlineSnapshot(`
+      Array [
+        Array [
+          "› Building.",
+        ],
+        Array [
+          "Skipping build because it is not configured.",
+        ],
+      ]
+    `);
+  });
 });

packages/shipjs/src/step/release/__tests__/runTest.spec.js

@@ -1,5 +1,5 @@
 import runTest from '../runTest';
-import { run } from '../../../util';
+import { run, print } from '../../../util';
 
 describe('runTest', () => {
   it('works', () => {
@@ -19,4 +19,48 @@ describe('runTest', () => {
       }
     `);
   });
+
+  it('skips test if testCommandBeforeRelease is falsy', () => {
+    runTest({
+      config: {
+        testCommandBeforeRelease: null,
+      },
+      dir: '.',
+      dryRun: false,
+    });
+    expect(run).toHaveBeenCalledTimes(0);
+    expect(print).toHaveBeenCalledTimes(2);
+    expect(print.mock.calls).toMatchInlineSnapshot(`
+      Array [
+        Array [
+          "› Running test.",
+        ],
+        Array [
+          "Skipping test because it is not configured.",
+        ],
+      ]
+    `);
+  });
+
+  it('skips test if testCommandBeforeRelease returns falsy', () => {
+    runTest({
+      config: {
+        testCommandBeforeRelease: () => '',
+      },
+      dir: '.',
+      dryRun: false,
+    });
+    expect(run).toHaveBeenCalledTimes(0);
+    expect(print).toHaveBeenCalledTimes(2);
+    expect(print.mock.calls).toMatchInlineSnapshot(`
+      Array [
+        Array [
+          "› Running test.",
+        ],
+        Array [
+          "Skipping test because it is not configured.",
+        ],
+      ]
+    `);
+  });
 });

packages/shipjs/src/step/release/runBuild.js

@@ -1,8 +1,14 @@
 import runStep from '../runStep';
-import { run } from '../../util';
+import { run, print } from '../../util';
+import { warning } from '../../color';
 
 export default ({ isYarn, config, dir, dryRun }) =>
   runStep({ title: 'Building.' }, () => {
     const { buildCommand } = config;
-    run({ command: buildCommand({ isYarn }), dir, dryRun });
+    const command = buildCommand && buildCommand({ isYarn });
+    if (!command) {
+      print(warning('Skipping build because it is not configured.'));
+      return;
+    }
+    run({ command, dir, dryRun });
   });

packages/shipjs/src/step/release/runTest.js

@@ -1,8 +1,15 @@
 import runStep from '../runStep';
-import { run } from '../../util';
+import { run, print } from '../../util';
+import { warning } from '../../color';
 
 export default ({ isYarn, config, dir, dryRun }) =>
   runStep({ title: 'Running test.' }, () => {
     const { testCommandBeforeRelease } = config;
-    run({ command: testCommandBeforeRelease({ isYarn }), dir, dryRun });
+    const command =
+      testCommandBeforeRelease && testCommandBeforeRelease({ isYarn });
+    if (!command) {
+      print(warning('Skipping test because it is not configured.'));
+      return;
+    }
+    run({ command, dir, dryRun });
   });

packages/shipjs/src/step/setup/addShipConfig.js

@@ -18,12 +18,13 @@ export default async ({
   dir,
 }) =>
   await runStep({ title: 'Creating ship.config.js' }, async () => {
-    const filePath = path.resolve(dir, 'ship.config.js');
-    const json = {
-      publishCommand:
-        isScoped && isPublic
-          ? ({ defaultCommand }) => `${defaultCommand} --access public`
-          : undefined,
+    const { testExists, buildExists } = checkIfScriptsExist({ dir });
+    const config = {
+      ...(isScoped &&
+        isPublic && {
+          publishCommand: ({ defaultCommand }) =>
+            `${defaultCommand} --access public`,
+        }),
       mergeStrategy:
         baseBranch === releaseBranch
           ? {
@@ -34,16 +35,19 @@ export default async ({
                 [baseBranch]: releaseBranch,
               },
             },
-      monorepo: useMonorepo
-        ? {
-            mainVersionFile,
-            packagesToBump,
-            packagesToPublish,
-          }
-        : undefined,
+      ...(useMonorepo && {
+        monorepo: {
+          mainVersionFile,
+          packagesToBump,
+          packagesToPublish,
+        },
+      }),
+      ...(!testExists && { testCommandBeforeRelease: () => null }),
+      ...(!buildExists && { buildCommand: () => null }),
     };
 
-    fs.writeFileSync(filePath, `module.exports = ${serialize(json)};`);
+    const filePath = path.resolve(dir, 'ship.config.js');
+    fs.writeFileSync(filePath, `module.exports = ${serialize(config)};`);
     await runPrettier({ filePath, dir });
 
     return () => {
@@ -52,3 +56,14 @@ export default async ({
       print('  > https://github.com/algolia/shipjs/blob/master/GUIDE.md');
     };
   });
+
+function checkIfScriptsExist({ dir }) {
+  const filePath = path.resolve(dir, 'package.json');
+  const json = JSON.parse(fs.readFileSync(filePath).toString());
+  const { test, build } = json.scripts || {};
+  return {
+    testExists:
+      Boolean(test) && test !== 'echo "Error: no test specified" && exit 1',
+    buildExists: Boolean(build),
+  };
+}