build

node_modules/source-map-resolve/source-map-resolve.js

@@ -1,6 +1,3 @@
-// Copyright 2014, 2015, 2016, 2017 Simon Lydell
-// X11 (“MIT”) Licensed. (See LICENSE.)
-
 // Note: source-map-resolve.js is generated from source-map-resolve-node.js and
 // source-map-resolve-template.js. Only edit the two latter files, _not_
 // source-map-resolve.js!
@@ -79,8 +76,45 @@ void (function(root, factory) {
   }
 
   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) {
     var url = sourceMappingURL.getFrom(code)
     if (!url) {
@@ -89,7 +123,7 @@ void (function(root, factory) {
 
     var dataUri = url.match(dataUriRegex)
     if (dataUri) {
-      var mimeType = dataUri[1]
+      var mimeType = dataUri[1] || "text/plain"
       var lastParameter = dataUri[2] || ""
       var encoded = dataUri[3] || ""
       var data = {
@@ -99,14 +133,19 @@ void (function(root, factory) {
         map: encoded
       }
       if (!jsonMimeTypeRegex.test(mimeType)) {
-        var error = new Error("Unuseful data uri mime type: " + (mimeType || "text/plain"))
+        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
       }
-      data.map = parseMapToJSON(
-        lastParameter === ";base64" ? atob(encoded) : decodeURIComponent(encoded),
-        data
-      )
       return data
     }