babel-runtime-es2015-instance-methods

0.1.2 verified Fri May 01 auth: no javascript deprecated

A Babel plugin that transforms calls to ES2015 instance methods on Array and String to helper runtime polyfills, ensuring compatibility in older environments. Version 0.1.2, no longer actively maintained. It targets specific methods (copyWithin, entries, fill, find, findIndex, keys, values for Array; codePointAt, endsWith, includes, repeat, startsWith for String) but lacks broader support and has been superseded by @babel/plugin-transform-runtime or core-js-based polyfills. No release cadence documented; last update likely years ago.

Common errors

error Error: Cannot find module 'babel-runtime-es2015-instance-methods/helpers/includes' ↓

cause Missing runtime helpers; required separate babel-runtime package.

fix

Install babel-runtime: npm install babel-runtime

error TypeError: plugin is not a function ↓

cause Using require() incorrectly with ESM default export.

fix

Use default import: const plugin = require('babel-runtime-es2015-instance-methods').default or import plugin from '...'

error ReferenceError: _includes is not defined ↓

cause Runtime helpers not loaded; likely missing babel-runtime or using in browser without bundler.

fix

Ensure babel-runtime is bundled or use a polyfill like core-js.

error SyntaxError: Unexpected token import ↓

cause Using import syntax without transpilation; only works in ES module context.

fix

Use CommonJS require in Node.js or transpile with Babel first.

error Module not found: Can't resolve 'babel-runtime-es2015-instance-methods' ↓

cause Package not installed or incorrect import path.

fix

Run npm install babel-runtime-es2015-instance-methods --save-dev

Warnings

deprecated No longer maintained; use @babel/plugin-transform-runtime with core-js instead. ↓

fix Replace with @babel/plugin-transform-runtime and configure core-js: https://babeljs.io/docs/en/babel-plugin-transform-runtime

gotcha Plugin only transforms specific methods; may miss some ES2015 methods (e.g., Array.from, Object.assign). ↓

fix Use a comprehensive polyfill like core-js directly.

breaking Requires external runtime helpers; must ensure babel-runtime is installed (deprecated). ↓

fix Install babel-runtime alongside (npm install babel-runtime).

gotcha Output uses require() for helpers; incompatible with ESM-only environments if helpers not bundled. ↓

fix Use a bundler or switch to @babel/plugin-transform-runtime with useESModules.

deprecated Package name includes 'es2015' which is outdated; Babel now uses 'env' preset. ↓

fix Migrate to @babel/preset-env with useBuiltIns: 'usage'.

Install

npm install babel-runtime-es2015-instance-methods

yarn add babel-runtime-es2015-instance-methods

pnpm add babel-runtime-es2015-instance-methods

Imports

default export

wrong

const plugin = require('babel-runtime-es2015-instance-methods').default

correct

import plugin from 'babel-runtime-es2015-instance-methods'

CommonJS require may not work due to ESM export.

in .babelrc

wrong

{"plugins": ["babel-runtime-es2015-instance-methods", {"loose": true}]}

correct

{"plugins": ["babel-runtime-es2015-instance-methods"]}

The plugin does not accept options.

require usage

wrong

const plugin = require('babel-runtime-es2015-instance-methods/default')

correct

const plugin = require('babel-runtime-es2015-instance-methods')

No subpath exports; use package name directly.

as Babel preset

// Not designed as a preset; use as plugin only.

Never use in presets array.

Quickstart

Shows installation, Babel config, and programmatic usage demonstrating transformation of Array.includes.

// Install: npm install --save-dev babel-runtime-es2015-instance-methods
// Then in your Babel configuration:
{
  "plugins": ["babel-runtime-es2015-instance-methods"]
}
// Or programmatically:
const babel = require('@babel/core');
const plugin = require('babel-runtime-es2015-instance-methods');
babel.transformSync(code, { plugins: [plugin] });

// Input: [1,2,3].includes(2)
// Output (approximate): var _includes = require("babel-runtime-es2015-instance-methods/helpers/includes");
// _includes([1,2,3], 2);