vue hello world项目
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3 years ago
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.canSkipRegexpu = canSkipRegexpu;
exports.generateRegexpuOptions = generateRegexpuOptions;
exports.transformFlags = transformFlags;
var _features = require("./features");
function generateRegexpuOptions(toTransform) {
const feat = (name, ok = "transform") => {
return (0, _features.hasFeature)(toTransform, _features.FEATURES[name]) ? ok : false;
};
return {
unicodeFlag: feat("unicodeFlag"),
unicodeSetsFlag: feat("unicodeSetsFlag") || feat("unicodeSetsFlag_syntax", "parse"),
dotAllFlag: feat("dotAllFlag"),
unicodePropertyEscapes: feat("unicodePropertyEscape"),
namedGroups: feat("namedCaptureGroups"),
onNamedGroup: () => {}
};
}
function canSkipRegexpu(node, options) {
const {
flags,
pattern
} = node;
if (flags.includes("v")) {
if (options.unicodeSetsFlag === "transform") return false;
}
if (flags.includes("u")) {
if (options.unicodeFlag === "transform") return false;
if (options.unicodePropertyEscapes === "transform" && /\\[pP]{/.test(pattern)) {
return false;
}
}
if (flags.includes("s")) {
if (options.dotAllFlag === "transform") return false;
}
if (options.namedGroups === "transform" && /\(\?<(?![=!])/.test(pattern)) {
return false;
}
return true;
}
function transformFlags(regexpuOptions, flags) {
if (regexpuOptions.unicodeSetsFlag === "transform") {
flags = flags.replace("v", "u");
}
if (regexpuOptions.unicodeFlag === "transform") {
flags = flags.replace("u", "");
}
if (regexpuOptions.dotAllFlag === "transform") {
flags = flags.replace("s", "");
}
return flags;
}