tc39/proposal-class-fields resource

Health v2 · maintenance only

Flags: no_releases archived no_license

Adoption not part of the score

1724 stars · 110 forks observed · 2026-08-28

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

The TC39 ECMAScript proposal repository for class field declarations, combining public and private fields for JavaScript classes. It reached Stage 4 and defines the `x = 0` and `#private` field syntax now part of the JavaScript language standard.

Use cases

• understand how class fields work in javascript
• learn private class fields with # syntax
• check define vs set semantics for public fields
• read the spec text for class field declarations
• reference the history of the class fields proposal

When to choose

• you need authoritative spec details on public/private class fields
• you are implementing a JavaScript engine or transpiler
• you want to understand [[Define]] vs [[Set]] semantics

When to avoid

• you want a tool or library rather than a specification document
• you need beginner tutorials rather than normative spec text

Facets

learning-resource · maturity stable

programming-language documentation programming-languages web-development frontend documentation cross-platform browser ecmascript javascript tc39 language-proposal specification class-fields private-fields stage-4 nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="tc39/proposal-class-fields")