--- /dev/null
+var sourceMappingURL = require("source-map-url")
+
+var resolveUrl = require("./resolve-url")
+var decodeUriComponent = require("./decode-uri-component")
+var urix = require("urix")
+var atob = require("atob")
+
+
+
+function callbackAsync(callback, error, result) {
+ setImmediate(function() { callback(error, result) })
+}
+
+function parseMapToJSON(string, data) {
+ try {
+ return JSON.parse(string.replace(/^\)\]\}'/, ""))
+ } catch (error) {
+ error.sourceMapData = data
+ throw error
+ }
+}
+
+function readSync(read, url, data) {
+ var readUrl = decodeUriComponent(url)
+ try {
+ return String(read(readUrl))
+ } catch (error) {
+ error.sourceMapData = data
+ throw error
+ }
+}
+
+
+
+function resolveSourceMap(code, codeUrl, read, callback) {
+ var mapData
+ try {
+ mapData = resolveSourceMapHelper(code, codeUrl)
+ } catch (error) {
+ return callbackAsync(callback, error)
+ }
+ if (!mapData || mapData.map) {
+ return callbackAsync(callback, null, mapData)
+ }
+ var readUrl = decodeUriComponent(mapData.url)
+ read(readUrl, function(error, result) {
+ if (error) {
+ error.sourceMapData = mapData
+ return callback(error)
+ }
+ mapData.map = String(result)
+ try {
+ mapData.map = parseMapToJSON(mapData.map, mapData)
+ } catch (error) {
+ return callback(error)
+ }
+ callback(null, mapData)
+ })
+}
+
+function resolveSourceMapSync(code, codeUrl, read) {
+ var mapData = resolveSourceMapHelper(code, codeUrl)
+ if (!mapData || mapData.map) {
+ return mapData
+ }
+ mapData.map = readSync(read, mapData.url, mapData)
+ mapData.map = parseMapToJSON(mapData.map, mapData)
+ return mapData
+}
+
+var dataUriRegex = /^data:([^,;]*)(;[^,;]*)*(?:,(.*))?$/
+
+/**
+ * The media type for JSON text is application/json.
+ *
+ * {@link https://tools.ietf.org/html/rfc8259#section-11 | IANA Considerations }
+ *
+ * `text/json` is non-standard media type
+ */
+var jsonMimeTypeRegex = /^(?:application|text)\/json$/
+
+/**
+ * JSON text exchanged between systems that are not part of a closed ecosystem
+ * MUST be encoded using UTF-8.
+ *
+ * {@link https://tools.ietf.org/html/rfc8259#section-8.1 | Character Encoding}
+ */
+var jsonCharacterEncoding = "utf-8"
+
+function base64ToBuf(b64) {
+ var binStr = atob(b64)
+ var len = binStr.length
+ var arr = new Uint8Array(len)
+ for (var i = 0; i < len; i++) {
+ arr[i] = binStr.charCodeAt(i)
+ }
+ return arr
+}
+
+function decodeBase64String(b64) {
+ if (typeof TextDecoder === "undefined" || typeof Uint8Array === "undefined") {
+ return atob(b64)
+ }
+ var buf = base64ToBuf(b64);
+ // Note: `decoder.decode` method will throw a `DOMException` with the
+ // `"EncodingError"` value when an coding error is found.
+ var decoder = new TextDecoder(jsonCharacterEncoding, {fatal: true})
+ return decoder.decode(buf);
+}
+
+function resolveSourceMapHelper(code, codeUrl) {
+ codeUrl = urix(codeUrl)
+
+ var url = sourceMappingURL.getFrom(code)
+ if (!url) {
+ return null
+ }
+
+ var dataUri = url.match(dataUriRegex)
+ if (dataUri) {
+ var mimeType = dataUri[1] || "text/plain"
+ var lastParameter = dataUri[2] || ""
+ var encoded = dataUri[3] || ""
+ var data = {
+ sourceMappingURL: url,
+ url: null,
+ sourcesRelativeTo: codeUrl,
+ map: encoded
+ }
+ if (!jsonMimeTypeRegex.test(mimeType)) {
+ var error = new Error("Unuseful data uri mime type: " + mimeType)
+ error.sourceMapData = data
+ throw error
+ }
+ try {
+ data.map = parseMapToJSON(
+ lastParameter === ";base64" ? decodeBase64String(encoded) : decodeURIComponent(encoded),
+ data
+ )
+ } catch (error) {
+ error.sourceMapData = data
+ throw error
+ }
+ return data
+ }
+
+ var mapUrl = resolveUrl(codeUrl, url)
+ return {
+ sourceMappingURL: url,
+ url: mapUrl,
+ sourcesRelativeTo: mapUrl,
+ map: null
+ }
+}
+
+
+
+function resolveSources(map, mapUrl, read, options, callback) {
+ if (typeof options === "function") {
+ callback = options
+ options = {}
+ }
+ var pending = map.sources ? map.sources.length : 0
+ var result = {
+ sourcesResolved: [],
+ sourcesContent: []
+ }
+
+ if (pending === 0) {
+ callbackAsync(callback, null, result)
+ return
+ }
+
+ var done = function() {
+ pending--
+ if (pending === 0) {
+ callback(null, result)
+ }
+ }
+
+ resolveSourcesHelper(map, mapUrl, options, function(fullUrl, sourceContent, index) {
+ result.sourcesResolved[index] = fullUrl
+ if (typeof sourceContent === "string") {
+ result.sourcesContent[index] = sourceContent
+ callbackAsync(done, null)
+ } else {
+ var readUrl = decodeUriComponent(fullUrl)
+ read(readUrl, function(error, source) {
+ result.sourcesContent[index] = error ? error : String(source)
+ done()
+ })
+ }
+ })
+}
+
+function resolveSourcesSync(map, mapUrl, read, options) {
+ var result = {
+ sourcesResolved: [],
+ sourcesContent: []
+ }
+
+ if (!map.sources || map.sources.length === 0) {
+ return result
+ }
+
+ resolveSourcesHelper(map, mapUrl, options, function(fullUrl, sourceContent, index) {
+ result.sourcesResolved[index] = fullUrl
+ if (read !== null) {
+ if (typeof sourceContent === "string") {
+ result.sourcesContent[index] = sourceContent
+ } else {
+ var readUrl = decodeUriComponent(fullUrl)
+ try {
+ result.sourcesContent[index] = String(read(readUrl))
+ } catch (error) {
+ result.sourcesContent[index] = error
+ }
+ }
+ }
+ })
+
+ return result
+}
+
+var endingSlash = /\/?$/
+
+function resolveSourcesHelper(map, mapUrl, options, fn) {
+ options = options || {}
+ mapUrl = urix(mapUrl)
+ var fullUrl
+ var sourceContent
+ var sourceRoot
+ for (var index = 0, len = map.sources.length; index < len; index++) {
+ sourceRoot = null
+ if (typeof options.sourceRoot === "string") {
+ sourceRoot = options.sourceRoot
+ } else if (typeof map.sourceRoot === "string" && options.sourceRoot !== false) {
+ sourceRoot = map.sourceRoot
+ }
+ // If the sourceRoot is the empty string, it is equivalent to not setting
+ // the property at all.
+ if (sourceRoot === null || sourceRoot === '') {
+ fullUrl = resolveUrl(mapUrl, map.sources[index])
+ } else {
+ // Make sure that the sourceRoot ends with a slash, so that `/scripts/subdir` becomes
+ // `/scripts/subdir/<source>`, not `/scripts/<source>`. Pointing to a file as source root
+ // does not make sense.
+ fullUrl = resolveUrl(mapUrl, sourceRoot.replace(endingSlash, "/"), map.sources[index])
+ }
+ sourceContent = (map.sourcesContent || [])[index]
+ fn(fullUrl, sourceContent, index)
+ }
+}
+
+
+
+function resolve(code, codeUrl, read, options, callback) {
+ if (typeof options === "function") {
+ callback = options
+ options = {}
+ }
+ if (code === null) {
+ var mapUrl = codeUrl
+ var data = {
+ sourceMappingURL: null,
+ url: mapUrl,
+ sourcesRelativeTo: mapUrl,
+ map: null
+ }
+ var readUrl = decodeUriComponent(mapUrl)
+ read(readUrl, function(error, result) {
+ if (error) {
+ error.sourceMapData = data
+ return callback(error)
+ }
+ data.map = String(result)
+ try {
+ data.map = parseMapToJSON(data.map, data)
+ } catch (error) {
+ return callback(error)
+ }
+ _resolveSources(data)
+ })
+ } else {
+ resolveSourceMap(code, codeUrl, read, function(error, mapData) {
+ if (error) {
+ return callback(error)
+ }
+ if (!mapData) {
+ return callback(null, null)
+ }
+ _resolveSources(mapData)
+ })
+ }
+
+ function _resolveSources(mapData) {
+ resolveSources(mapData.map, mapData.sourcesRelativeTo, read, options, function(error, result) {
+ if (error) {
+ return callback(error)
+ }
+ mapData.sourcesResolved = result.sourcesResolved
+ mapData.sourcesContent = result.sourcesContent
+ callback(null, mapData)
+ })
+ }
+}
+
+function resolveSync(code, codeUrl, read, options) {
+ var mapData
+ if (code === null) {
+ var mapUrl = codeUrl
+ mapData = {
+ sourceMappingURL: null,
+ url: mapUrl,
+ sourcesRelativeTo: mapUrl,
+ map: null
+ }
+ mapData.map = readSync(read, mapUrl, mapData)
+ mapData.map = parseMapToJSON(mapData.map, mapData)
+ } else {
+ mapData = resolveSourceMapSync(code, codeUrl, read)
+ if (!mapData) {
+ return null
+ }
+ }
+ var result = resolveSourcesSync(mapData.map, mapData.sourcesRelativeTo, read, options)
+ mapData.sourcesResolved = result.sourcesResolved
+ mapData.sourcesContent = result.sourcesContent
+ return mapData
+}
+
+
+
+module.exports = {
+ resolveSourceMap: resolveSourceMap,
+ resolveSourceMapSync: resolveSourceMapSync,
+ resolveSources: resolveSources,
+ resolveSourcesSync: resolveSourcesSync,
+ resolve: resolve,
+ resolveSync: resolveSync,
+ parseMapToJSON: parseMapToJSON
+}
projects / dotfiles / .git / blobdiff