hexo/node_modules/@babel/plugin-transform-unicode-es.../lib/index.js

145 lines
3.7 KiB
JavaScript
Raw Normal View History

2023-10-03 11:14:36 +08:00
"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);
}
}
};
});
2023-09-25 15:58:56 +08:00
exports.default = _default;