tc39/proposal-do-expressions resource

Health v2 · maintenance only

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Adoption not part of the score

1195 stars · 10 forks observed · 2026-08-28

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

A TC39 ECMAScript stage 1 proposal introducing `do` expressions to JavaScript, allowing statements like conditionals to be used as expressions. The repository contains the proposal documentation, motivation, examples, and preliminary specification text.

Use cases

• write if/else as an expression instead of nested ternaries in JavaScript
• scope variables locally in an expression-oriented style
• use conditional logic inside JSX templates
• track the status of the do expressions language proposal
• understand the TC39 proposal process and spec text

When to choose

• you want to follow or contribute to the evolution of JavaScript syntax
• you need reference material on expression-oriented JavaScript proposals
• you are evaluating future JS language features for tooling support

When to avoid

• you need a feature you can use in production today - this is stage 1 and not standardized
• you want a library or runtime tool rather than a language specification
• you need stable, documented JavaScript behavior

Facets

learning-resource · maturity experimental

programming-language developer-tools programming-languages web-development browser cross-platform ecmascript-proposal tc39 stage-1 javascript-syntax do-expressions specification javascript nodejs

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markdown · JSON · MCP: product_card(name="tc39/proposal-do-expressions")