babel-preset-njs - npm Package Compare versions

Comparing version 0.1.2 to 0.2.0

index.js

@@ -28,5 +28,24 @@ const { declare } = require('@babel/helper-plugin-utils')
 
+const asyncHelpersValues = ['external', 'local', 'inline']
+
+const bundlers = [
+  '@rollup/plugin-babel',
+  'babel-loader',  // webpack
+]
+
 module.exports = declare((api, opts) => {
   api.assertVersion(7)
 
+  const callerName = api.caller(c => c.name)
+
+  const asyncHelpers = v.validateStringOption(
+    'asyncHelpers',
+    opts.asyncHelpers,
+    bundlers.includes(callerName) ? 'external' : 'local',
+  )
+  if (!asyncHelpersValues.includes(asyncHelpers)) {
+    const allowedValues = asyncHelpersValues.map(x => `'${x}'`).join(', ')
+    throw Error(`'asyncHelpers' option must be one of: ${allowedValues}, but given: '${asyncHelpers}'`)
+  }
+
   const assumeArrayIterables = v.validateBooleanOption(
@@ -130,5 +149,9 @@ 'assumeArrayIterables',
       // calls with use of minimal helper functions.
-      [transformAsyncToPromises],
+      [transformAsyncToPromises, {
+        target: 'es6',
+        externalHelpers: asyncHelpers === 'external',
+        inlineHelpers: asyncHelpers === 'inline',
+      }],
     ],
   }
 })

package.json

 {
   "name": "babel-preset-njs",
-  "version": "0.1.2",
+  "version": "0.2.0",
   "description": "A Babel preset for njs - NGINX JavaScript.",
@@ -5,0 +5,0 @@ "author": "Jakub Jirutka <[e-mail]>",

README.md

@@ -56,3 +56,3 @@ A [Babel](https://babeljs.io)
 
-Assume that all iterables used in `for…​of` loops, [array spread
+Assume that all iterables used in `for...of` loops, [array spread
 syntax](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax#Spread_in_array_literals)
@@ -79,2 +79,26 @@ and [array
 
+### `asyncHelpers`
+
+`'external'`, `'local'`, `'inline'`
+
+Toggles how
+[async-to-promises](https://github.com/rpetrich/babel-plugin-transform-async-to-promises)
+injects its helpers:
+
+  - `'external'` — injects import from
+    `babel-plugin-transform-async-to-promises/helpers` into each file
+    with async/await
+
+  - `'local'` — injects the needed helper functions into each file with
+    async/await
+
+  - `'inline'` — inlines the needed helper code in place of each
+    occurrence of async/await
+
+Defaults to `'external'` if Rollup or webpack is detected, otherwise
+`'local'`.
+
+  - [async-to-promises](https://github.com/rpetrich/babel-plugin-transform-async-to-promises):
+    `externalHelpers`, `inlineHelpers`
+
 ### `looseClasses`
@@ -133,3 +157,3 @@
 The list of included Babel plugins is available
-[here](https://github.com/jirutka/babel-preset-njs/blob/v0.1.2/README.adoc#plugins).
+[here](https://github.com/jirutka/babel-preset-njs/blob/v0.2.0/README.adoc#plugins).
 
@@ -136,0 +160,0 @@ ## References

No alert changes

Improved metrics

Total package byte prevSize

25416

increased by9.1%

Lines of code

142

increased by15.45%

Number of lines in readme file

166

increased by16.9%

No dependency changes