16 lines
416 B
JavaScript
16 lines
416 B
JavaScript
import * as t from "@babel/types";
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const PURE_ANNOTATION = "#__PURE__";
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const isPureAnnotated = ({ leadingComments }) =>
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!!leadingComments &&
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leadingComments.some(comment => /[@#]__PURE__/.test(comment.value));
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export default function annotateAsPure(pathOrNode) {
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const node = pathOrNode.node || pathOrNode;
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if (isPureAnnotated(node)) {
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return;
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}
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t.addComment(node, "leading", PURE_ANNOTATION);
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}
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