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Compile JSX directly to VDom for improve draw of view performance and allow progressive view rendering

facebook/react#25533·250633·JavaScript·916 天未动·1 条评论·上游最近活跃 ·池内状态:可认领
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Right now JSX compiles to array of React.createElement or _jsx function. Each function calls for make VDom elements in runtime. I suggest compiling JSX directly to VDom. Because each function call in javascript has its own cost. On my PC its 2 nanoseonds. On 1000 JSX elements its 2 milliseconds. This (call function) operation can be done not at runtime, but at the time of compilation. This optimization will improve the speed of JSX calculation by 25-50%. <details> <summary>Performance test</summary> The simplest speed test. Can be copied to a file and run in nodejs. On my PC have next result: time-jsx: 0.22ms time-vdom: 0.15ms On a real application, the gap can be much larger. ```javascript const ce = (elem, props, childrens) => { return { type: elem, props, childrens } } const compJsx = () => { return ( ce( "div", null, [ ce( "div", null, [ ce( "div", null, "Текст" ), ce( "div", null, "Текст" ), ce( "div", null, "Текст" ), ce( "div", null, "Текст" ), ce( "div", null, "Текст" ), ce( "div", null, "Текст" ), …
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