addyosmani/es6-equivalents-in-es5 resource

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

2511 stars · 165 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A community-contributed reference guide showing ES6 (ECMAScript 2015) language features alongside their ES5 equivalents, covering arrow functions, block scoping, template literals, destructuring, classes, modules, and more. It is a work-in-progress educational document rather than a software tool.

Use cases

• learn how es6 arrow functions translate to es5
• understand what babel-style transpilation does under the hood
• reference es6 features for environments without es6 support
• study javascript language evolution from es5 to es6
• find es5 fallbacks for destructuring and template literals
• teach a team how es6 classes and modules map to es5 patterns

When to choose

• you need to understand how modern JavaScript syntax desugars to ES5
• you are maintaining or supporting legacy ES5-only environments
• you want a quick side-by-side reference while learning ES6
• you are writing or debugging a transpiler or polyfill

When to avoid

• you need an actual transpiler - use Babel or TypeScript instead
• you need up-to-date coverage of post-ES6 JavaScript features
• you need a maintained, complete reference - the repo is a stale WIP with no license

Facets

learning-resource · maturity abandoned

documentation developer-tools programming-languages tutorials web-development developer-tools browser cross-platform javascript es6 es5 ecmascript reference-guide language-features transpilation nodejs

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