bc518174
 王天杨
提交两个项目文件
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import preprocessStyles from "./preprocessStyles.js";
/* eslint-disable @typescript-eslint/naming-convention */
// We need to pass an argument as `{ theme }` for PigmentCSS, but we don't want to
// allocate more objects.
const arg = {
theme: undefined
};
/**
* Memoize style function on theme.
* Intended to be used in styled() calls that only need access to the theme.
*/
export default function unstable_memoTheme(styleFn) {
let lastValue;
let lastTheme;
return function styleMemoized(props) {
let value = lastValue;
if (value === undefined || props.theme !== lastTheme) {
arg.theme = props.theme;
value = preprocessStyles(styleFn(arg));
lastValue = value;
lastTheme = props.theme;
}
return value;
};
}
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