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