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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = normalizeFile;
function _fs() {
const data = _interopRequireDefault(require("fs"));
_fs = function () {
return data;
};
return data;
}
function _path() {
const data = _interopRequireDefault(require("path"));
_path = function () {
return data;
};
return data;
}
function _debug() {
const data = _interopRequireDefault(require("debug"));
_debug = function () {
return data;
};
return data;
}
function _cloneDeep() {
const data = _interopRequireDefault(require("lodash/cloneDeep"));
_cloneDeep = function () {
return data;
};
return data;
}
function t() {
const data = _interopRequireWildcard(require("@babel/types"));
t = function () {
return data;
};
return data;
}
function _convertSourceMap() {
const data = _interopRequireDefault(require("convert-source-map"));
_convertSourceMap = function () {
return data;
};
return data;
}
var _file = _interopRequireDefault(require("./file/file"));
var _parser = _interopRequireDefault(require("../parser"));
function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const debug = (0, _debug().default)("babel:transform:file");
const LARGE_INPUT_SOURCEMAP_THRESHOLD = 1000000;
function* normalizeFile(pluginPasses, options, code, ast) {
code = `${code || ""}`;
if (ast) {
if (ast.type === "Program") {
ast = t().file(ast, [], []);
} else if (ast.type !== "File") {
throw new Error("AST root must be a Program or File node");
}
ast = (0, _cloneDeep().default)(ast);
} else {
ast = yield* (0, _parser.default)(pluginPasses, options, code);
}
let inputMap = null;
if (options.inputSourceMap !== false) {
if (typeof options.inputSourceMap === "object") {
inputMap = _convertSourceMap().default.fromObject(options.inputSourceMap);
}
if (!inputMap) {
const lastComment = extractComments(INLINE_SOURCEMAP_REGEX, ast);
if (lastComment) {
try {
inputMap = _convertSourceMap().default.fromComment(lastComment);
} catch (err) {
debug("discarding unknown inline input sourcemap", err);
}
}
}
if (!inputMap) {
const lastComment = extractComments(EXTERNAL_SOURCEMAP_REGEX, ast);
if (typeof options.filename === "string" && lastComment) {
try {
const match = EXTERNAL_SOURCEMAP_REGEX.exec(lastComment);
const inputMapContent = _fs().default.readFileSync(_path().default.resolve(_path().default.dirname(options.filename), match[1]));
if (inputMapContent.length > LARGE_INPUT_SOURCEMAP_THRESHOLD) {
debug("skip merging input map > 1 MB");
} else {
inputMap = _convertSourceMap().default.fromJSON(inputMapContent);
}
} catch (err) {
debug("discarding unknown file input sourcemap", err);
}
} else if (lastComment) {
debug("discarding un-loadable file input sourcemap");
}
}
}
return new _file.default(options, {
code,
ast,
inputMap
});
}
const INLINE_SOURCEMAP_REGEX = /^[@#]\s+sourceMappingURL=data:(?:application|text)\/json;(?:charset[:=]\S+?;)?base64,(?:.*)$/;
const EXTERNAL_SOURCEMAP_REGEX = /^[@#][ \t]+sourceMappingURL=([^\s'"`]+)[ \t]*$/;
function extractCommentsFromList(regex, comments, lastComment) {
if (comments) {
comments = comments.filter(({
value
}) => {
if (regex.test(value)) {
lastComment = value;
return false;
}
return true;
});
}
return [comments, lastComment];
}
function extractComments(regex, ast) {
let lastComment = null;
t().traverseFast(ast, node => {
[node.leadingComments, lastComment] = extractCommentsFromList(regex, node.leadingComments, lastComment);
[node.innerComments, lastComment] = extractCommentsFromList(regex, node.innerComments, lastComment);
[node.trailingComments, lastComment] = extractCommentsFromList(regex, node.trailingComments, lastComment);
});
return lastComment;
}
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