Registry / testing / acorn-object-rest-spread

acorn-object-rest-spread

library1.1.0jsnpmunverified

Acorn plugin that adds support for the Object Rest/Spread Properties proposal (e.g., `let { x, y, ...z } = obj`) to Acorn 5. Version 1.1.0 is the latest and only stable release. It is a lightweight, single-purpose plugin that must be injected into an Acorn instance via `require('acorn-object-rest-spread/inject')`. Compared to other parsers like Babel, this plugin keeps Acorn minimal and fast. No updates since 2017; compatible with Acorn 5.x only.

testing

npm install acorn-object-rest-spread

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · ACORN-OBJECT-REST-

acorn-object-rest-spread

testingjavascriptv1.1.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

acorn (pre-injected)

✓ var acorn = require('acorn-object-rest-spread')

✗ var acorn = require('acorn')

The default export is an Acorn instance with the plugin already injected.

inject function

✓ var inject = require('acorn-object-rest-spread/inject')

✗ var inject = require('acorn-object-rest-spread').inject

The inject function is a separate file; it must be required from '/inject'.

parse call with plugin

✓ acorn.parse(code, { plugins: { objectRestSpread: true } })

✗ acorn.parse(code, { objectRestSpread: true })

The plugin option must be nested under `plugins`; using it at the top level won't enable the plugin.

Parses a string with object rest/spread properties and logs the AST.

Debug

Known issues

gotchaOnly compatible with Acorn 5.x; will fail with Acorn 6+.

fix

Downgrade to Acorn 5 or switch to a newer parser.

affects: >=1.0.0

gotchaPlugin must be enabled via `plugins: {objectRestSpread: true}` in parse options.

fix

Add the plugin option in the parse call.

affects: >=1.0.0

gotchaCannot inject the same plugin multiple times; will throw an error.

fix

Inject plugin only once.

affects: >=1.0.0

deprecatedPlugin is unmaintained; use acorn@6+ built-in support for rest/spread.

fix

Upgrade to Acorn 6 or later and remove the plugin.

affects: >=1.0.0

Errors

Common errors & fixes

Error: acorn-object-rest-spread/acorn is not a function

Using `require('acorn-object-rest-spread')()` incorrectly; the export is already an Acorn instance.

fix

var acorn = require('acorn-object-rest-spread'); acorn.parse(...);

TypeError: Cannot read property 'objectRestSpread' of undefined

`plugins` option is missing or not an object.

fix

Include `plugins: { objectRestSpread: true }` in parse options.

Upgrade

Version history

1.1.0latest on npm

Audit

Dependencies

acornrequiredpeer dependency: requires Acorn 5.x to be installed

Agent activity

46 hits · last 30 days

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Resources

githubhttps://victor-homyakov@github.com/victor-homyakov/acorn-object-rest-spread ↗

packageacorn-object-rest-spread ↗

homepagehttps://github.com/victor-homyakov/acorn-object-rest-spread#readme ↗