@babel/plugin-proposal-partial-application · Babel Skip to main content Docs Setup Try it out Videos Blog Search Donate Team GitHub * Modules * TC39 Proposals * Stage 3 * Early stages * async-do-expressions * destructuring-private * discard-binding * do-expressions * export-default-from * function-bind * function-sent * import-defer * optional-chaining-assign * partial-application * pipeline-operator * record-and-tuple * throw-expressions * syntax-module-blocks * Web Compatibility * * TC39 Proposals * Early stages * partial-application On this page @babel/plugin-proposal-partial-application Example ​ (examples are from proposal) JavaScript function add ( x , y ) { return x + y ; } const addOne = add ( 1 , ? ) ; // apply from the left addOne ( 2 ) ; // 3 const addTen = add ( ? , 10 ) ; // apply from the right addTen ( 2 ) ; // 12 let newScore = player . score | > add ( 7 , ? ) | > clamp ( 0 , 100 , ? ) ; // shallow stack, the pipe to `clamp` is the same frame as the pipe to `add`. Valid Usage ​ JavaScript f ( x , ? ) // partial application from left f ( ? , x ) // partial application from right f ( ? , x , ? ) // partial application for any arg o . f ( x , ? ) // partial application from left o . f ( ? , x ) // partial application from right o . f ( ? , x , ? ) // partial application for any arg super . f ( ? ) // partial application allowed for call on |SuperProperty| Invalid Usage ​ JavaScript f ( x + ? ) // `?` not in top-level Arguments of call x + ? // `?` not in top-level Arguments of call ?. f ( ) // `?` not in top-level Arguments of call new f ( ? ) // `?` not supported in `new` super ( ? ) // `?` not supported in |SuperCall| Installation ​ * npm * Yarn * pnpm * Bun npm install --save-dev @babel/plugin-proposal-partial-application yarn add --dev @babel/plugin-proposal-partial-application pnpm add --save-dev @babel/plugin-proposal-partial-application bun add --dev @babel/plugin-proposal-partial-application Usage ​ With a configuration file (Recommended) ​ babel.config.json { "plugins" : [ [ "@babel/plugin-proposal-partial-application" , { "version" : "2018-07" } ] ] } Via Node API ​ JavaScript require ( "@babel/core" ) . transformSync ( "code" , { plugins : [ [ "@babel/plugin-proposal-partial-application" , { version : "2018-07" } ] ] , } ) ; Options ​ History Version Changes v8.0.0 Added the version option with support for "2018-07" version (required) ​ There is only one version currently supported: * "2018-07" is the proposal version after the updates that was discussed in the July 2018 TC39 meeting. References ​ * Proposal: Partial Application Edit this page Previous optional-chaining-assign Next pipeline-operator * Example * Valid Usage * Invalid Usage * Installation * Usage * With a configuration file (Recommended) * Via Node API * Options * version (required) * References Docs * Learn ES2015 Community * Videos * User Showcase * Stack Overflow * Slack Channel * X (Twitter) * Bluesky More * Blog * GitHub Org * GitHub Repo * Website Repo * Old 7.x Site * Old 6.x Site * Old 5.x Site