Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 | 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 73x 73x 73x 73x 150x 150x 150x 150x 694x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 150x 34112x 34112x 5816x 5816x 34112x 34112x 150x 5825x 5825x 5825x 5825x 5825x 5825x 5825x 5825x 5825x 22x 22x 22x 22x 5825x 2x 2x 2x 2x 2x 2x 5820x 5820x 5825x 150x 34099x 34099x 34099x 34099x 34099x 34099x 654x 654x 654x 654x 654x 33445x 33445x 33445x 33445x 34099x 213x 213x 213x 207x 207x 207x 207x 207x 207x 213x 6x 6x 6x 6x 6x 6x 6x 6x 213x 34099x 150x 213x 213x 213x 213x 213x 14x 213x 6x 6x 213x 213x 193x 193x 193x 193x 193x 213x 150x 150x 150x 150x 213x 213x 213x 213x 213x 250366x 213x 213x 150x 193x 193x 193x 193x 193x 193x 160x 160x 160x 193x 150x 150x 150x 14x 14x 14x 14x 14x 14x 13x 13x 13x 13x 13x 13x 1x 1x 1x 14x 1x 1x 1x 14x 150x 150x 150x 150x 45x 45x 46x 46x 45x 45x 45x 45x 45x 45x 150x 150x 150x 150x 150x 150x 150x 150x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 150x 2x 2x 2x 150x 64x 64x 62x 62x 64x 18x 18x 61x 63x 59x 55x 55x 18x 18x 18x 18x 55x 59x 64x 19x 19x 42x 64x 150x 150x 150x 150x 150x 150x 150x 150x | 'use strict';
const {
ArrayPrototypeMap,
JSONParse,
ObjectCreate,
ObjectKeys,
ObjectGetOwnPropertyDescriptor,
ObjectPrototypeHasOwnProperty,
RegExpPrototypeTest,
SafeMap,
StringPrototypeMatch,
StringPrototypeSplit,
} = primordials;
function ObjectGetValueSafe(obj, key) {
const desc = ObjectGetOwnPropertyDescriptor(obj, key);
return ObjectPrototypeHasOwnProperty(desc, 'value') ? desc.value : undefined;
}
// See https://sourcemaps.info/spec.html for SourceMap V3 specification.
const { Buffer } = require('buffer');
let debug = require('internal/util/debuglog').debuglog('source_map', (fn) => {
debug = fn;
});
const fs = require('fs');
const { getOptionValue } = require('internal/options');
const { IterableWeakMap } = require('internal/util/iterable_weak_map');
const {
normalizeReferrerURL,
} = require('internal/modules/cjs/helpers');
const { validateBoolean } = require('internal/validators');
// Since the CJS module cache is mutable, which leads to memory leaks when
// modules are deleted, we use a WeakMap so that the source map cache will
// be purged automatically:
const cjsSourceMapCache = new IterableWeakMap();
// The esm cache is not mutable, so we can use a Map without memory concerns:
const esmSourceMapCache = new SafeMap();
const { fileURLToPath, pathToFileURL, URL } = require('internal/url');
let SourceMap;
let sourceMapsEnabled;
function getSourceMapsEnabled() {
if (sourceMapsEnabled === undefined) {
setSourceMapsEnabled(getOptionValue('--enable-source-maps'));
}
return sourceMapsEnabled;
}
function setSourceMapsEnabled(val) {
validateBoolean(val, 'val');
const {
setSourceMapsEnabled,
setPrepareStackTraceCallback
} = internalBinding('errors');
setSourceMapsEnabled(val);
if (val) {
const {
prepareStackTrace
} = require('internal/source_map/prepare_stack_trace');
setPrepareStackTraceCallback(prepareStackTrace);
} else if (sourceMapsEnabled !== undefined) {
// Reset prepare stack trace callback only when disabling source maps.
const {
prepareStackTrace,
} = require('internal/errors');
setPrepareStackTraceCallback(prepareStackTrace);
}
sourceMapsEnabled = val;
}
function maybeCacheSourceMap(filename, content, cjsModuleInstance) {
const sourceMapsEnabled = getSourceMapsEnabled();
if (!(process.env.NODE_V8_COVERAGE || sourceMapsEnabled)) return;
try {
filename = normalizeReferrerURL(filename);
} catch (err) {
// This is most likely an [eval]-wrapper, which is currently not
// supported.
debug(err);
return;
}
const match = StringPrototypeMatch(
content,
/\/[*/]#\s+sourceMappingURL=(?<sourceMappingURL>[^\s]+)/
);
if (match) {
const data = dataFromUrl(filename, match.groups.sourceMappingURL);
const url = data ? null : match.groups.sourceMappingURL;
if (cjsModuleInstance) {
cjsSourceMapCache.set(cjsModuleInstance, {
filename,
lineLengths: lineLengths(content),
data,
url
});
} else {
// If there is no cjsModuleInstance assume we are in a
// "modules/esm" context.
esmSourceMapCache.set(filename, {
lineLengths: lineLengths(content),
data,
url
});
}
}
}
function dataFromUrl(sourceURL, sourceMappingURL) {
try {
const url = new URL(sourceMappingURL);
switch (url.protocol) {
case 'data:':
return sourceMapFromDataUrl(sourceURL, url.pathname);
default:
debug(`unknown protocol ${url.protocol}`);
return null;
}
} catch (err) {
debug(err);
// If no scheme is present, we assume we are dealing with a file path.
const mapURL = new URL(sourceMappingURL, sourceURL).href;
return sourceMapFromFile(mapURL);
}
}
// Cache the length of each line in the file that a source map was extracted
// from. This allows translation from byte offset V8 coverage reports,
// to line/column offset Source Map V3.
function lineLengths(content) {
// We purposefully keep \r as part of the line-length calculation, in
// cases where there is a \r\n separator, so that this can be taken into
// account in coverage calculations.
return ArrayPrototypeMap(StringPrototypeSplit(content, /\n|\u2028|\u2029/), (line) => {
return line.length;
});
}
function sourceMapFromFile(mapURL) {
try {
const content = fs.readFileSync(fileURLToPath(mapURL), 'utf8');
const data = JSONParse(content);
return sourcesToAbsolute(mapURL, data);
} catch (err) {
debug(err);
return null;
}
}
// data:[<mediatype>][;base64],<data> see:
// https://tools.ietf.org/html/rfc2397#section-2
function sourceMapFromDataUrl(sourceURL, url) {
const { 0: format, 1: data } = StringPrototypeSplit(url, ',');
const splitFormat = StringPrototypeSplit(format, ';');
const contentType = splitFormat[0];
const base64 = splitFormat[splitFormat.length - 1] === 'base64';
if (contentType === 'application/json') {
const decodedData = base64 ?
Buffer.from(data, 'base64').toString('utf8') : data;
try {
const parsedData = JSONParse(decodedData);
return sourcesToAbsolute(sourceURL, parsedData);
} catch (err) {
debug(err);
return null;
}
} else {
debug(`unknown content-type ${contentType}`);
return null;
}
}
// If the sources are not absolute URLs after prepending of the "sourceRoot",
// the sources are resolved relative to the SourceMap (like resolving script
// src in a html document).
function sourcesToAbsolute(baseURL, data) {
data.sources = data.sources.map((source) => {
source = (data.sourceRoot || '') + source;
return new URL(source, baseURL).href;
});
// The sources array is now resolved to absolute URLs, sourceRoot should
// be updated to noop.
data.sourceRoot = '';
return data;
}
// WARNING: The `sourceMapCacheToObject` and `appendCJSCache` run during
// shutdown. In particular, they also run when Workers are terminated, making
// it important that they do not call out to any user-provided code, including
// built-in prototypes that might have been tampered with.
// Get serialized representation of source-map cache, this is used
// to persist a cache of source-maps to disk when NODE_V8_COVERAGE is enabled.
function sourceMapCacheToObject() {
const obj = ObjectCreate(null);
for (const { 0: k, 1: v } of esmSourceMapCache) {
obj[k] = v;
}
appendCJSCache(obj);
if (ObjectKeys(obj).length === 0) {
return undefined;
}
return obj;
}
function appendCJSCache(obj) {
for (const value of cjsSourceMapCache) {
obj[ObjectGetValueSafe(value, 'filename')] = {
lineLengths: ObjectGetValueSafe(value, 'lineLengths'),
data: ObjectGetValueSafe(value, 'data'),
url: ObjectGetValueSafe(value, 'url')
};
}
}
function findSourceMap(sourceURL) {
if (!RegExpPrototypeTest(/^\w+:\/\//, sourceURL)) {
sourceURL = pathToFileURL(sourceURL).href;
}
if (!SourceMap) {
SourceMap = require('internal/source_map/source_map').SourceMap;
}
let sourceMap = esmSourceMapCache.get(sourceURL);
if (sourceMap === undefined) {
for (const value of cjsSourceMapCache) {
const filename = ObjectGetValueSafe(value, 'filename');
if (sourceURL === filename) {
sourceMap = {
data: ObjectGetValueSafe(value, 'data')
};
}
}
}
if (sourceMap && sourceMap.data) {
return new SourceMap(sourceMap.data);
}
return undefined;
}
module.exports = {
findSourceMap,
getSourceMapsEnabled,
setSourceMapsEnabled,
maybeCacheSourceMap,
sourceMapCacheToObject,
};
|