# tc39/proposal-partial-application

Proposal to add partial application to ECMAScript

Repository: https://github.com/tc39/proposal-partial-application
Canonical: https://ross.abutalabs.com/products/proposal-partial-application
Homepage: https://tc39.es/proposal-partial-application/
Language: HTML
License: BSD-3-Clause
License Family: permissive
Last push: 2022-05-22T16:32:16+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3333, "days_push": 1564, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1028, forks 17 (observed 2026-08-28T04:03:17.310639+00:00)

## What it is
A TC39 Stage 1 proposal to add partial application syntax (~() with ? placeholders) to the ECMAScript language. It is a specification draft and discussion repository, not runnable software.

## Use cases
- understand the proposed partial application syntax for JavaScript
- follow the status of the TC39 partial application proposal
- review spec text for ~() calling convention and ? placeholders
- compare partial application with Function.prototype.bind and arrow functions
- give feedback on an ECMAScript language proposal

## When to choose
- you are researching or contributing to ECMAScript language design
- you want to track whether partial application syntax may land in JavaScript
- you are implementing a transpiler or engine prototype for the proposal

## When to avoid
- you need a library or tool you can install and use today
- you need partial application in production JavaScript now - use bind or arrow functions
- you expect stable, standardized behavior - this is only Stage 1

## Facets
- artifact type: learning-resource
- maturity: experimental
- function: programming-language, developer-tools
- domain: programming-languages
- platform: cross-platform
- tags: ecmascript, tc39, language-proposal, partial-application, javascript, specification-draft, specifications

## Member repositories
- tc39/proposal-partial-application (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:17.310639+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:07:49.668478+00:00, confidence not recorded.
  - readme: https://github.com/tc39/proposal-partial-application (fetched 2026-08-28T04:03:17.310639+00:00, sha 27d6e801b99c)
  - homepage: https://tc39.es/proposal-partial-application/ (fetched 2026-08-29T13:07:46.027363+00:00, sha c90a1c701b2b)
- Data as of 2026-08-30T08:39:29.467469+00:00.