28 lines
691 B
JavaScript
28 lines
691 B
JavaScript
import rewritePattern from "regexpu-core";
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import * as regex from "@babel/helper-regex";
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export default function(api, options) {
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const { useUnicodeFlag = true } = options;
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if (typeof useUnicodeFlag !== "boolean") {
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throw new Error(".useUnicodeFlag must be a boolean, or undefined");
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}
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return {
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visitor: {
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RegExpLiteral(path) {
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const node = path.node;
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if (!regex.is(node, "u")) {
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return;
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}
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node.pattern = rewritePattern(node.pattern, node.flags, {
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unicodePropertyEscape: true,
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useUnicodeFlag,
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});
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if (!useUnicodeFlag) {
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regex.pullFlag(node, "u");
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}
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},
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},
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};
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}
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