- Have the `jsx` helper do the `defaultProps` work instead of calling `defaultProps` inline. - Put `key` after `props` and make it optional. - Inline `children` as rest args instead of in the object. - Rename `createRawReactElement` to `jsx`. I wish I was kidding. Most of these are silly microoptimizations. In my test file (based off an internal RN app), this reduces the parsing overhead of inlining from around 1% to 0.1% in JSC and from 0.6% to 0.0% in V8 (compared to element inlining before this commit). Once parsed, the initial render with inlining is the same speed as not inlining in JSC and ~1% slower in V8. A second initial render in the same context (reusing the function objects, JIT, etc) is 2.0% faster in JSC and 5.5% faster in V8.
7 lines
154 B
JavaScript
7 lines
154 B
JavaScript
var TestComponent = React.createClass({
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render: function () {
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return babelHelpers.jsx("span", {
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className: this.props.someProp
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});
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}
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}); |