feat: symlink dist/package.json -> package.json when running serve (#41)

Author: lguychard

src/cli.ts

@@ -185,7 +185,8 @@ async function main(): Promise<void> {
                 tslint: "tslint -p tsconfig.json './src/**/*.ts'",
                 typecheck: 'tsc -p tsconfig.json',
                 build: `parcel build --out-file dist/${name}.js src/${name}.ts`,
-                serve: `parcel serve --no-hmr --out-file dist/${name}.js src/${name}.ts`,
+                'symlink-package': 'node dev/symlinkPackage.js',
+                serve: `npm run symlink-package && parcel serve --no-hmr --out-file dist/${name}.js src/${name}.ts`,
                 'watch:typecheck': 'tsc -p tsconfig.json -w',
                 'watch:build': 'tsc -p tsconfig.dist.json -w',
                 'sourcegraph:prepublish': 'npm run build',
@@ -200,6 +201,25 @@ async function main(): Promise<void> {
         await writeFile('package.json', JSON.stringify(packageJson, null, 2))
     }
 
+    console.log('📂 Creating dev directory')
+    await mkdir('dev')
+    await writeFile('dev/symlinkPackage.js', [
+        "const createSymlink = require('create-symlink')",
+        "const { existsSync } = require('fs')",
+        "const mkdirp = require('mkdirp-promise')",
+        "const { resolve } = require('path')",
+        '',
+        "mkdirp('dist').then(async () => {",
+        "   if (!existsSync('./dist/package.json')) {",
+        "       await createSymlink(resolve('./package.json'), resolve('./dist/package.json'))",
+        '   }',
+        '   process.exit(0)',
+        '}).catch(err => {',
+        '   console.error(err)',
+        '   process.exit(1)',
+        '})',
+    ].join('\n'))
+
     try {
         console.log('📂 Creating src directory')
         await mkdir('src')
@@ -243,6 +263,8 @@ async function main(): Promise<void> {
             'tslint',
             '@sourcegraph/tslint-config',
             '@sourcegraph/tsconfig',
+            'create-symlink',
+            'mkdirp-promise',
         ],
         { stdio: 'inherit' }
     )