8ffca0475a
* feat: implement create-regexp-features-plugin * fix: test input is not effective * refactor: leverage create-regexp-features-plugin * test: add more test cases * test: update test fixture * chore: add type annotation to features * test: add regression test for issue 9892 * add regression test for issue 9199 * address review comments from Nicolò * address review comments from Brian * small tweaks * Enable dotAllFlag when flags includes u
57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
import { FEATURES, hasFeature } from "./features";
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export function generateRegexpuOptions(node, features) {
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let useUnicodeFlag = false,
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dotAllFlag = false,
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unicodePropertyEscape = false,
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namedGroup = false;
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const { flags, pattern } = node;
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const flagsIncludesU = flags.includes("u");
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if (flagsIncludesU) {
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if (!hasFeature(features, FEATURES.unicodeFlag)) {
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useUnicodeFlag = true;
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}
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if (
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hasFeature(features, FEATURES.unicodePropertyEscape) &&
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/\\[pP]{/.test(pattern)
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) {
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unicodePropertyEscape = true;
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}
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}
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if (hasFeature(features, FEATURES.dotAllFlag) && flags.indexOf("s") >= 0) {
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dotAllFlag = true;
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}
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if (
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hasFeature(features, FEATURES.namedCaptureGroups) &&
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/\(\?<(?![=!])/.test(pattern)
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) {
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namedGroup = true;
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}
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if (
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!namedGroup &&
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!unicodePropertyEscape &&
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!dotAllFlag &&
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(!flagsIncludesU || useUnicodeFlag)
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) {
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return null;
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}
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// Now we have to feed regexpu-core the regex
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if (flagsIncludesU && flags.indexOf("s") >= 0) {
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// When flags includes u, `config.unicode` will be enabled even if `u` is supported natively.
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// In this case we have to enable dotAllFlag, otherwise `rewritePattern(/./su)` will return
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// incorrect result
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// https://github.com/mathiasbynens/regexpu-core/blob/v4.6.0/rewrite-pattern.js#L191
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dotAllFlag = true;
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}
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return {
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useUnicodeFlag,
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onNamedGroup: () => {},
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namedGroup,
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unicodePropertyEscape,
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dotAllFlag,
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lookbehind: true,
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};
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}
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