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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = normalizeFile;
function _fs() {
const data = require("fs");
_fs = function () {
return data;
};
return data;
}
function _path() {
const data = require("path");
_path = function () {
return data;
};
return data;
}
function _debug() {
const data = require("debug");
_debug = function () {
return data;
};
return data;
}
function _t() {
const data = require("@babel/types");
_t = function () {
return data;
};
return data;
}
function _convertSourceMap() {
const data = require("convert-source-map");
_convertSourceMap = function () {
return data;
};
return data;
}
var _file = require("./file/file");
var _parser = require("../parser");
var _cloneDeep = require("./util/clone-deep");
const {
file,
traverseFast
} = _t();
const debug = _debug()("babel:transform:file");
const LARGE_INPUT_SOURCEMAP_THRESHOLD = 3000000;
const INLINE_SOURCEMAP_REGEX = /^[@#]\s+sourceMappingURL=data:(?:application|text)\/json;(?:charset[:=]\S+?;)?base64,(?:.*)$/;
const EXTERNAL_SOURCEMAP_REGEX = /^[@#][ \t]+sourceMappingURL=([^\s'"`]+)[ \t]*$/;
function* normalizeFile(pluginPasses, options, code, ast) {
code = `${code || ""}`;
if (ast) {
if (ast.type === "Program") {
ast = file(ast, [], []);
} else if (ast.type !== "File") {
throw new Error("AST root must be a Program or File node");
}
if (options.cloneInputAst) {
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().fromObject(options.inputSourceMap);
}
if (!inputMap) {
const lastComment = extractComments(INLINE_SOURCEMAP_REGEX, ast);
if (lastComment) {
try {
inputMap = _convertSourceMap().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().readFileSync(_path().resolve(_path().dirname(options.filename), match[1]));
if (inputMapContent.length > LARGE_INPUT_SOURCEMAP_THRESHOLD) {
debug("skip merging input map > 1 MB");
} else {
inputMap = _convertSourceMap().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: ast,
inputMap
});
}
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;
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;
}
0 && 0;
//# sourceMappingURL=normalize-file.js.map
|
