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