tc39/proposal-top-level-await resource

Health v2 · maintenance only

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1081 stars · 45 forks observed · 2026-08-28

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

The official TC39 ECMAScript proposal repository for top-level `await`, which reached Stage 4 and was merged into the JavaScript language specification. It contains the motivation, explainer, and formal specification text allowing `await` at the top level of ES modules.

Use cases

• understand how top-level await works in ES modules
• read the official spec text for top-level await
• learn why IIAFE patterns are problematic for async module initialization
• find motivation and semantics for awaiting resources at module top level
• reference the proposal when implementing ESM engines or bundlers

When to choose

• you need authoritative specification details or motivation for top-level await
• you are implementing a JavaScript engine, transpiler, or bundler that must support top-level await
• you want to understand async module evaluation semantics

When to avoid

• you want a tool or library to use top-level await rather than read about it
• you need runtime support itself - use a modern JavaScript engine instead
• you want tutorials rather than formal specification documents

Facets

learning-resource · maturity stable

programming-language interpreter developer-tools programming-languages web-development cross-platform ecmascript tc39 javascript language-proposal top-level-await esm specification stage-4 specifications

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