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index.js 3.53 KiB
"use strict";
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _helperPluginUtils = require("@babel/helper-plugin-utils");
var _core = require("@babel/core");
var _default = (0, _helperPluginUtils.declare)(api => {
  api.assertVersion(7);
  const surrogate = /[\ud800-\udfff]/g;
  const unicodeEscape = /(\\+)u\{([0-9a-fA-F]+)\}/g;
  function escape(code) {
    let str = code.toString(16);
    while (str.length < 4) str = "0" + str;
    return "\\u" + str;
  function replacer(match, backslashes, code) {
    if (backslashes.length % 2 === 0) {
      return match;
    const char = String.fromCodePoint(parseInt(code, 16));
    const escaped = backslashes.slice(0, -1) + escape(char.charCodeAt(0));
    return char.length === 1 ? escaped : escaped + escape(char.charCodeAt(1));
  function replaceUnicodeEscapes(str) {
    return str.replace(unicodeEscape, replacer);
  function getUnicodeEscape(str) {
    let match;
    while (match = unicodeEscape.exec(str)) {
      if (match[1].length % 2 === 0) continue;
      unicodeEscape.lastIndex = 0;
      return match[0];
    return null;
  return {
    name: "transform-unicode-escapes",
    manipulateOptions({
      generatorOpts
    }) {
      var _generatorOpts$jsescO, _generatorOpts$jsescO2;
      if (!generatorOpts.jsescOption) {
        generatorOpts.jsescOption = {};
      (_generatorOpts$jsescO2 = (_generatorOpts$jsescO = generatorOpts.jsescOption).minimal) != null ? _generatorOpts$jsescO2 : _generatorOpts$jsescO.minimal = false;
    visitor: {
      Identifier(path) {
        const {
          node,
          key
} = path; const { name } = node; const replaced = name.replace(surrogate, c => { return `_u${c.charCodeAt(0).toString(16)}`; }); if (name === replaced) return; const str = _core.types.inherits(_core.types.stringLiteral(name), node); if (key === "key") { path.replaceWith(str); return; } const { parentPath, scope } = path; if (parentPath.isMemberExpression({ property: node }) || parentPath.isOptionalMemberExpression({ property: node })) { parentPath.node.computed = true; path.replaceWith(str); return; } const binding = scope.getBinding(name); if (binding) { scope.rename(name, scope.generateUid(replaced)); return; } throw path.buildCodeFrameError(`Can't reference '${name}' as a bare identifier`); }, "StringLiteral|DirectiveLiteral"(path) { const { node } = path; const { extra } = node; if (extra != null && extra.raw) extra.raw = replaceUnicodeEscapes(extra.raw); }, TemplateElement(path) { const { node, parentPath } = path; const { value } = node; const firstEscape = getUnicodeEscape(value.raw); if (!firstEscape) return; const grandParent = parentPath.parentPath; if (grandParent.isTaggedTemplateExpression()) { throw path.buildCodeFrameError(`Can't replace Unicode escape '${firstEscape}' inside tagged template literals. You can enable '@babel/plugin-transform-template-literals' to compile them to classic strings.`); } value.raw = replaceUnicodeEscapes(value.raw); }
} }; }); exports.default = _default;