tc39/proposal-pipeline-operator resource

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

7904 stars · 107 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A TC39 Stage 2 proposal and formal specification for adding a Hack-style pipe operator (|>) to JavaScript, enabling left-to-right function application instead of deep nesting. The repository hosts the explainer, specification, and history, with an accompanying Babel plugin available for transpilation.

Use cases

• add a pipe operator to javascript
• avoid deeply nested function calls in js
• read the tc39 pipeline operator proposal
• try the javascript pipe operator with babel
• understand hack-style pipelines in ecmascript
• follow the status of the js pipeline operator proposal

When to choose

• you want to track or contribute to the standardization of the pipe operator in JavaScript
• you need the formal specification text for the proposed |> operator
• you want to experiment with pipe syntax today via the Babel plugin

When to avoid

• you need a runnable library or tool rather than a language proposal document
• you cannot use a transpiler like Babel and need the feature in shipping JavaScript engines
• you want a stable, finalized ECMAScript feature - this proposal is still at Stage 2

Facets

learning-resource · maturity active

programming-language programming-languages web-development frontend documentation browser tc39 ecmascript-proposal pipe-operator javascript-syntax specification stage-2 babel-plugin nodejs web-server

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For agents

markdown · JSON · MCP: product_card(name="tc39/proposal-pipeline-operator")