Initial

resources/app/node_modules/@pixi/basis/dist/basis.js

@@ -0,0 +1,424 @@
+/*!
+ * @pixi/basis - v7.4.2
+ * Compiled Wed, 20 Mar 2024 19:55:28 UTC
+ *
+ * @pixi/basis is licensed under the MIT License.
+ * http://www.opensource.org/licenses/mit-license
+ */
+this.PIXI = this.PIXI || {};
+var _pixi_basis = function(exports, compressedTextures, core, assets) {
+  "use strict";
+  var BASIS_FORMATS = /* @__PURE__ */ ((BASIS_FORMATS2) => (BASIS_FORMATS2[BASIS_FORMATS2.cTFETC1 = 0] = "cTFETC1", BASIS_FORMATS2[BASIS_FORMATS2.cTFETC2 = 1] = "cTFETC2", BASIS_FORMATS2[BASIS_FORMATS2.cTFBC1 = 2] = "cTFBC1", BASIS_FORMATS2[BASIS_FORMATS2.cTFBC3 = 3] = "cTFBC3", BASIS_FORMATS2[BASIS_FORMATS2.cTFBC4 = 4] = "cTFBC4", BASIS_FORMATS2[BASIS_FORMATS2.cTFBC5 = 5] = "cTFBC5", BASIS_FORMATS2[BASIS_FORMATS2.cTFBC7 = 6] = "cTFBC7", BASIS_FORMATS2[BASIS_FORMATS2.cTFPVRTC1_4_RGB = 8] = "cTFPVRTC1_4_RGB", BASIS_FORMATS2[BASIS_FORMATS2.cTFPVRTC1_4_RGBA = 9] = "cTFPVRTC1_4_RGBA", BASIS_FORMATS2[BASIS_FORMATS2.cTFASTC_4x4 = 10] = "cTFASTC_4x4", BASIS_FORMATS2[BASIS_FORMATS2.cTFATC_RGB = 11] = "cTFATC_RGB", BASIS_FORMATS2[BASIS_FORMATS2.cTFATC_RGBA_INTERPOLATED_ALPHA = 12] = "cTFATC_RGBA_INTERPOLATED_ALPHA", BASIS_FORMATS2[BASIS_FORMATS2.cTFRGBA32 = 13] = "cTFRGBA32", BASIS_FORMATS2[BASIS_FORMATS2.cTFRGB565 = 14] = "cTFRGB565", BASIS_FORMATS2[BASIS_FORMATS2.cTFBGR565 = 15] = "cTFBGR565", BASIS_FORMATS2[BASIS_FORMATS2.cTFRGBA4444 = 16] = "cTFRGBA4444", BASIS_FORMATS2))(BASIS_FORMATS || {});
+  const BASIS_FORMAT_TO_INTERNAL_FORMAT = {
+    0: compressedTextures.INTERNAL_FORMATS.COMPRESSED_RGB_ETC1_WEBGL,
+    2: compressedTextures.INTERNAL_FORMATS.COMPRESSED_RGB_S3TC_DXT1_EXT,
+    3: compressedTextures.INTERNAL_FORMATS.COMPRESSED_RGBA_S3TC_DXT5_EXT,
+    8: compressedTextures.INTERNAL_FORMATS.COMPRESSED_RGB_PVRTC_4BPPV1_IMG,
+    9: compressedTextures.INTERNAL_FORMATS.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG,
+    11: compressedTextures.INTERNAL_FORMATS.COMPRESSED_RGB_ATC_WEBGL,
+    10: compressedTextures.INTERNAL_FORMATS.COMPRESSED_RGBA_ASTC_4x4_KHR,
+    6: compressedTextures.INTERNAL_FORMATS.COMPRESSED_RGBA_BPTC_UNORM_EXT
+  }, BASIS_FORMAT_TO_TYPE = {
+    13: core.TYPES.UNSIGNED_BYTE,
+    14: core.TYPES.UNSIGNED_SHORT_5_6_5,
+    16: core.TYPES.UNSIGNED_SHORT_4_4_4_4
+  }, INTERNAL_FORMAT_TO_BASIS_FORMAT = Object.keys(BASIS_FORMAT_TO_INTERNAL_FORMAT).map((key) => Number(key)).reduce((reverseMap, basisFormat) => (reverseMap[BASIS_FORMAT_TO_INTERNAL_FORMAT[basisFormat]] = basisFormat, reverseMap), {}), BASIS_FORMATS_ALPHA = {
+    3: !0,
+    9: !0,
+    10: !0,
+    6: !0
+  };
+  function TranscoderWorkerWrapper() {
+    let basisBinding;
+    const messageHandlers = {
+      init: (message) => self.BASIS ? (self.BASIS({ wasmBinary: message.wasmSource }).then((basisLibrary) => {
+        basisLibrary.initializeBasis(), basisBinding = basisLibrary, self.postMessage({
+          type: "init",
+          success: !0
+        });
+      }), null) : (console.warn("jsSource was not prepended?"), {
+        type: "init",
+        success: !1
+      }),
+      transcode(message) {
+        const basisData = message.basisData, BASIS = basisBinding, data = basisData, basisFile = new BASIS.BasisFile(data), imageCount = basisFile.getNumImages(), basisFormat = basisFile.getHasAlpha() ? message.rgbaFormat : message.rgbFormat, basisFallbackFormat = 14, imageArray = new Array(imageCount);
+        let fallbackMode = !1;
+        if (!basisFile.startTranscoding())
+          return basisFile.close(), basisFile.delete(), {
+            type: "transcode",
+            requestID: message.requestID,
+            success: !1,
+            imageArray: null
+          };
+        for (let i = 0; i < imageCount; i++) {
+          const levels = basisFile.getNumLevels(i), imageResource = {
+            imageID: i,
+            levelArray: new Array(),
+            width: null,
+            height: null
+          };
+          for (let j = 0; j < levels; j++) {
+            const format = fallbackMode ? basisFallbackFormat : basisFormat, width = basisFile.getImageWidth(i, j), height = basisFile.getImageHeight(i, j), byteSize = basisFile.getImageTranscodedSizeInBytes(i, j, format), alignedWidth = width + 3 & -4, alignedHeight = height + 3 & -4;
+            j === 0 && (imageResource.width = alignedWidth, imageResource.height = alignedHeight);
+            const imageBuffer = new Uint8Array(byteSize);
+            if (!basisFile.transcodeImage(imageBuffer, i, j, format, !1, !1)) {
+              if (fallbackMode)
+                return console.error(`Basis failed to transcode image ${i}, level ${j}!`), { type: "transcode", requestID: message.requestID, success: !1 };
+              console.warn(`Basis failed to transcode image ${i}, level ${j}! Retrying to an uncompressed texture format!`), i = -1, fallbackMode = !0;
+              break;
+            }
+            imageResource.levelArray.push({
+              levelID: j,
+              levelWidth: width,
+              levelHeight: height,
+              levelBuffer: imageBuffer
+            });
+          }
+          imageArray[i] = imageResource;
+        }
+        return basisFile.close(), basisFile.delete(), {
+          type: "transcode",
+          requestID: message.requestID,
+          success: !0,
+          basisFormat: fallbackMode ? basisFallbackFormat : basisFormat,
+          imageArray
+        };
+      }
+    };
+    self.onmessage = (e) => {
+      const msg = e.data, response = messageHandlers[msg.type](msg);
+      response && self.postMessage(response);
+    };
+  }
+  const _TranscoderWorker = class _TranscoderWorker2 {
+    constructor() {
+      this.requests = {}, this.onMessage = (e) => {
+        const data = e.data;
+        if (data.type === "init") {
+          if (!data.success)
+            throw new Error("BasisResource.TranscoderWorker failed to initialize.");
+          this.isInit = !0, this.onInit();
+        } else if (data.type === "transcode") {
+          --this.load;
+          const requestID = data.requestID;
+          data.success ? this.requests[requestID].resolve(data) : this.requests[requestID].reject(), delete this.requests[requestID];
+        }
+      }, this.isInit = !1, this.load = 0, this.initPromise = new Promise((resolve) => {
+        this.onInit = resolve;
+      }), _TranscoderWorker2.wasmSource || console.warn("resources.BasisResource.TranscoderWorker has not been given the transcoder WASM binary!"), this.worker = new Worker(_TranscoderWorker2.workerURL), this.worker.onmessage = this.onMessage, this.worker.postMessage({
+        type: "init",
+        jsSource: _TranscoderWorker2.jsSource,
+        wasmSource: _TranscoderWorker2.wasmSource
+      });
+    }
+    /** Generated URL for the transcoder worker script. */
+    static get workerURL() {
+      if (!_TranscoderWorker2._workerURL) {
+        let workerSource = TranscoderWorkerWrapper.toString();
+        const beginIndex = workerSource.indexOf("{"), endIndex = workerSource.lastIndexOf("}");
+        workerSource = workerSource.slice(beginIndex + 1, endIndex), _TranscoderWorker2.jsSource && (workerSource = `${_TranscoderWorker2.jsSource}
+${workerSource}`), _TranscoderWorker2._workerURL = URL.createObjectURL(new Blob([workerSource]));
+      }
+      return _TranscoderWorker2._workerURL;
+    }
+    /** @returns a promise that is resolved when the web-worker is initialized */
+    initAsync() {
+      return this.initPromise;
+    }
+    /**
+     * Creates a promise that will resolve when the transcoding of a *.basis file is complete.
+     * @param basisData - *.basis file contents
+     * @param rgbaFormat - transcoding format for RGBA files
+     * @param rgbFormat - transcoding format for RGB files
+     * @returns a promise that is resolved with the transcoding response of the web-worker
+     */
+    async transcodeAsync(basisData, rgbaFormat, rgbFormat) {
+      ++this.load;
+      const requestID = _TranscoderWorker2._tempID++, requestPromise = new Promise((resolve, reject) => {
+        this.requests[requestID] = {
+          resolve,
+          reject
+        };
+      });
+      return this.worker.postMessage({
+        requestID,
+        basisData,
+        rgbaFormat,
+        rgbFormat,
+        type: "transcode"
+      }), requestPromise;
+    }
+    /**
+     * Loads the transcoder source code
+     * @param jsURL - URL to the javascript basis transcoder
+     * @param wasmURL - URL to the wasm basis transcoder
+     * @returns A promise that resolves when both the js and wasm transcoders have been loaded.
+     */
+    static loadTranscoder(jsURL, wasmURL) {
+      const jsPromise = fetch(jsURL).then((res) => res.text()).then((text) => {
+        _TranscoderWorker2.jsSource = text;
+      }), wasmPromise = fetch(wasmURL).then((res) => res.arrayBuffer()).then((arrayBuffer) => {
+        _TranscoderWorker2.wasmSource = arrayBuffer;
+      });
+      return Promise.all([jsPromise, wasmPromise]).then((data) => (this._onTranscoderInitializedResolve(), data));
+    }
+    /**
+     * Set the transcoder source code directly
+     * @param jsSource - source for the javascript basis transcoder
+     * @param wasmSource - source for the wasm basis transcoder
+     */
+    static setTranscoder(jsSource, wasmSource) {
+      _TranscoderWorker2.jsSource = jsSource, _TranscoderWorker2.wasmSource = wasmSource;
+    }
+  };
+  _TranscoderWorker.onTranscoderInitialized = new Promise((resolve) => {
+    _TranscoderWorker._onTranscoderInitializedResolve = resolve;
+  }), _TranscoderWorker._tempID = 0;
+  let TranscoderWorker = _TranscoderWorker;
+  const _BasisParser = class _BasisParser2 {
+    /**
+     * Runs transcoding and populates imageArray. It will run the transcoding in a web worker
+     * if they are available.
+     * @private
+     */
+    static async transcode(arrayBuffer) {
+      let resources;
+      return typeof Worker != "undefined" && _BasisParser2.TranscoderWorker.wasmSource ? resources = await _BasisParser2.transcodeAsync(arrayBuffer) : resources = _BasisParser2.transcodeSync(arrayBuffer), resources;
+    }
+    /**
+     * Finds a suitable worker for transcoding and sends a transcoding request
+     * @private
+     * @async
+     */
+    static async transcodeAsync(arrayBuffer) {
+      !_BasisParser2.defaultRGBAFormat && !_BasisParser2.defaultRGBFormat && _BasisParser2.autoDetectFormats();
+      const workerPool = _BasisParser2.workerPool;
+      let leastLoad = 268435456, worker = null;
+      for (let i = 0, j = workerPool.length; i < j; i++)
+        workerPool[i].load < leastLoad && (worker = workerPool[i], leastLoad = worker.load);
+      worker || (worker = new TranscoderWorker(), workerPool.push(worker)), await worker.initAsync();
+      const response = await worker.transcodeAsync(
+        new Uint8Array(arrayBuffer),
+        _BasisParser2.defaultRGBAFormat.basisFormat,
+        _BasisParser2.defaultRGBFormat.basisFormat
+      ), basisFormat = response.basisFormat, imageArray = response.imageArray, fallbackMode = basisFormat > 12;
+      let imageResources;
+      if (fallbackMode)
+        imageResources = imageArray.map(
+          (image) => new core.BufferResource(
+            new Uint16Array(image.levelArray[0].levelBuffer.buffer),
+            {
+              width: image.width,
+              height: image.height
+            }
+          )
+        );
+      else {
+        const format = BASIS_FORMAT_TO_INTERNAL_FORMAT[response.basisFormat];
+        imageResources = new Array(imageArray.length);
+        for (let i = 0, j = imageArray.length; i < j; i++)
+          imageResources[i] = new compressedTextures.CompressedTextureResource(null, {
+            format,
+            width: imageArray[i].width,
+            height: imageArray[i].height,
+            levelBuffers: imageArray[i].levelArray,
+            levels: imageArray[i].levelArray.length
+          });
+      }
+      return imageResources.basisFormat = basisFormat, imageResources;
+    }
+    /**
+     * Runs transcoding on the main thread.
+     * @private
+     */
+    static transcodeSync(arrayBuffer) {
+      !_BasisParser2.defaultRGBAFormat && !_BasisParser2.defaultRGBFormat && _BasisParser2.autoDetectFormats();
+      const BASIS = _BasisParser2.basisBinding, data = new Uint8Array(arrayBuffer), basisFile = new BASIS.BasisFile(data), imageCount = basisFile.getNumImages(), basisFormat = basisFile.getHasAlpha() ? _BasisParser2.defaultRGBAFormat.basisFormat : _BasisParser2.defaultRGBFormat.basisFormat, basisFallbackFormat = BASIS_FORMATS.cTFRGB565, imageResources = new Array(imageCount);
+      let fallbackMode = _BasisParser2.fallbackMode;
+      if (!basisFile.startTranscoding())
+        return console.error("Basis failed to start transcoding!"), basisFile.close(), basisFile.delete(), null;
+      for (let i = 0; i < imageCount; i++) {
+        const levels = fallbackMode ? 1 : basisFile.getNumLevels(i), width = basisFile.getImageWidth(i, 0), height = basisFile.getImageHeight(i, 0), alignedWidth = width + 3 & -4, alignedHeight = height + 3 & -4, imageLevels = new Array(levels);
+        for (let j = 0; j < levels; j++) {
+          const levelWidth = basisFile.getImageWidth(i, j), levelHeight = basisFile.getImageHeight(i, j), byteSize = basisFile.getImageTranscodedSizeInBytes(
+            i,
+            0,
+            fallbackMode ? basisFallbackFormat : basisFormat
+          );
+          if (imageLevels[j] = {
+            levelID: j,
+            levelBuffer: new Uint8Array(byteSize),
+            levelWidth,
+            levelHeight
+          }, !basisFile.transcodeImage(
+            imageLevels[j].levelBuffer,
+            i,
+            0,
+            fallbackMode ? basisFallbackFormat : basisFormat,
+            !1,
+            !1
+          ))
+            if (fallbackMode) {
+              console.error(`Basis failed to transcode image ${i}, level 0!`);
+              break;
+            } else {
+              i = -1, fallbackMode = !0, console.warn(`Basis failed to transcode image ${i}, level 0 to a compressed texture format. Retrying to an uncompressed fallback format!`);
+              continue;
+            }
+        }
+        let imageResource;
+        fallbackMode ? imageResource = new core.BufferResource(
+          new Uint16Array(imageLevels[0].levelBuffer.buffer),
+          { width, height }
+        ) : imageResource = new compressedTextures.CompressedTextureResource(null, {
+          format: BASIS_FORMAT_TO_INTERNAL_FORMAT[basisFormat],
+          width: alignedWidth,
+          height: alignedHeight,
+          levelBuffers: imageLevels,
+          levels
+        }), imageResources[i] = imageResource;
+      }
+      basisFile.close(), basisFile.delete();
+      const transcodedResources = imageResources;
+      return transcodedResources.basisFormat = fallbackMode ? basisFallbackFormat : basisFormat, transcodedResources;
+    }
+    /**
+     * Detects the available compressed texture formats on the device.
+     * @param extensions - extensions provided by a WebGL context
+     * @ignore
+     */
+    static autoDetectFormats(extensions) {
+      if (!extensions) {
+        const gl = core.settings.ADAPTER.createCanvas().getContext("webgl");
+        if (!gl) {
+          console.error("WebGL not available for BASIS transcoding. Silently failing.");
+          return;
+        }
+        extensions = {
+          bptc: gl.getExtension("EXT_texture_compression_bptc"),
+          astc: gl.getExtension("WEBGL_compressed_texture_astc"),
+          etc: gl.getExtension("WEBGL_compressed_texture_etc"),
+          s3tc: gl.getExtension("WEBGL_compressed_texture_s3tc"),
+          s3tc_sRGB: gl.getExtension("WEBGL_compressed_texture_s3tc_srgb"),
+          /* eslint-disable-line camelcase */
+          pvrtc: gl.getExtension("WEBGL_compressed_texture_pvrtc") || gl.getExtension("WEBKIT_WEBGL_compressed_texture_pvrtc"),
+          etc1: gl.getExtension("WEBGL_compressed_texture_etc1"),
+          atc: gl.getExtension("WEBGL_compressed_texture_atc")
+        };
+      }
+      const supportedFormats = {};
+      for (const key in extensions) {
+        const extension = extensions[key];
+        extension && Object.assign(supportedFormats, Object.getPrototypeOf(extension));
+      }
+      for (let i = 0; i < 2; i++) {
+        const detectWithAlpha = !!i;
+        let internalFormat, basisFormat;
+        for (const id in supportedFormats)
+          if (internalFormat = supportedFormats[id], basisFormat = INTERNAL_FORMAT_TO_BASIS_FORMAT[internalFormat], basisFormat !== void 0 && (detectWithAlpha && BASIS_FORMATS_ALPHA[basisFormat] || !detectWithAlpha && !BASIS_FORMATS_ALPHA[basisFormat]))
+            break;
+        internalFormat ? _BasisParser2[detectWithAlpha ? "defaultRGBAFormat" : "defaultRGBFormat"] = {
+          textureFormat: internalFormat,
+          basisFormat
+        } : (_BasisParser2[detectWithAlpha ? "defaultRGBAFormat" : "defaultRGBFormat"] = {
+          textureFormat: core.TYPES.UNSIGNED_SHORT_5_6_5,
+          basisFormat: BASIS_FORMATS.cTFRGB565
+        }, _BasisParser2.fallbackMode = !0);
+      }
+    }
+    /**
+     * Binds the basis_universal transcoder to decompress *.basis files. You must initialize the transcoder library yourself.
+     * @example
+     * import { BasisParser } from '@pixi/basis';
+     *
+     * // BASIS() returns a Promise-like object
+     * globalThis.BASIS().then((basisLibrary) =>
+     * {
+     *     // Initialize basis-library; otherwise, transcoded results maybe corrupt!
+     *     basisLibrary.initializeBasis();
+     *
+     *     // Bind BasisParser to the transcoder
+     *     BasisParser.bindTranscoder(basisLibrary);
+     * });
+     * @param basisLibrary - the initialized transcoder library
+     * @private
+     */
+    static bindTranscoder(basisLibrary) {
+      _BasisParser2.basisBinding = basisLibrary;
+    }
+    /**
+     * Loads the transcoder source code for use in {@link PIXI.BasisParser.TranscoderWorker}.
+     * @private
+     * @param jsURL - URL to the javascript basis transcoder
+     * @param wasmURL - URL to the wasm basis transcoder
+     */
+    static loadTranscoder(jsURL, wasmURL) {
+      return _BasisParser2.TranscoderWorker.loadTranscoder(jsURL, wasmURL);
+    }
+    /**
+     * Set the transcoder source code directly
+     * @private
+     * @param jsSource - source for the javascript basis transcoder
+     * @param wasmSource - source for the wasm basis transcoder
+     */
+    static setTranscoder(jsSource, wasmSource) {
+      _BasisParser2.TranscoderWorker.setTranscoder(jsSource, wasmSource);
+    }
+    static get TRANSCODER_WORKER_POOL_LIMIT() {
+      return this.workerPool.length || 1;
+    }
+    static set TRANSCODER_WORKER_POOL_LIMIT(limit) {
+      for (let i = this.workerPool.length; i < limit; i++)
+        this.workerPool[i] = new TranscoderWorker(), this.workerPool[i].initAsync();
+    }
+  };
+  _BasisParser.fallbackMode = !1, _BasisParser.workerPool = [], _BasisParser.TranscoderWorker = TranscoderWorker;
+  let BasisParser = _BasisParser;
+  const detectBasis = {
+    extension: {
+      type: core.ExtensionType.DetectionParser,
+      priority: 3
+    },
+    test: async () => !!(BasisParser.basisBinding && BasisParser.TranscoderWorker.wasmSource),
+    add: async (formats) => [...formats, "basis"],
+    remove: async (formats) => formats.filter((f) => f !== "basis")
+  };
+  core.extensions.add(detectBasis);
+  var __defProp = Object.defineProperty, __getOwnPropSymbols = Object.getOwnPropertySymbols, __hasOwnProp = Object.prototype.hasOwnProperty, __propIsEnum = Object.prototype.propertyIsEnumerable, __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: !0, configurable: !0, writable: !0, value }) : obj[key] = value, __spreadValues = (a, b) => {
+    for (var prop in b || (b = {}))
+      __hasOwnProp.call(b, prop) && __defNormalProp(a, prop, b[prop]);
+    if (__getOwnPropSymbols)
+      for (var prop of __getOwnPropSymbols(b))
+        __propIsEnum.call(b, prop) && __defNormalProp(a, prop, b[prop]);
+    return a;
+  };
+  const loadBasis = {
+    extension: {
+      type: core.ExtensionType.LoadParser,
+      priority: assets.LoaderParserPriority.High
+    },
+    name: "loadBasis",
+    test(url) {
+      return assets.checkExtension(url, ".basis");
+    },
+    async load(url, asset, loader) {
+      await TranscoderWorker.onTranscoderInitialized;
+      const arrayBuffer = await (await core.settings.ADAPTER.fetch(url)).arrayBuffer(), resources = await BasisParser.transcode(arrayBuffer), type = BASIS_FORMAT_TO_TYPE[resources.basisFormat], format = resources.basisFormat !== BASIS_FORMATS.cTFRGBA32 ? core.FORMATS.RGB : core.FORMATS.RGBA, textures = resources.map((resource) => {
+        const base = new core.BaseTexture(resource, __spreadValues({
+          mipmap: resource instanceof compressedTextures.CompressedTextureResource && resource.levels > 1 ? core.MIPMAP_MODES.ON_MANUAL : core.MIPMAP_MODES.OFF,
+          alphaMode: core.ALPHA_MODES.NO_PREMULTIPLIED_ALPHA,
+          type,
+          format
+        }, asset.data));
+        return assets.createTexture(base, loader, url);
+      });
+      return textures.length === 1 ? textures[0] : textures;
+    },
+    unload(texture) {
+      Array.isArray(texture) ? texture.forEach((t) => t.destroy(!0)) : texture.destroy(!0);
+    }
+  };
+  return core.extensions.add(loadBasis), exports.BASIS_FORMATS = BASIS_FORMATS, exports.BASIS_FORMATS_ALPHA = BASIS_FORMATS_ALPHA, exports.BASIS_FORMAT_TO_INTERNAL_FORMAT = BASIS_FORMAT_TO_INTERNAL_FORMAT, exports.BASIS_FORMAT_TO_TYPE = BASIS_FORMAT_TO_TYPE, exports.BasisParser = BasisParser, exports.INTERNAL_FORMAT_TO_BASIS_FORMAT = INTERNAL_FORMAT_TO_BASIS_FORMAT, exports.TranscoderWorker = TranscoderWorker, exports.detectBasis = detectBasis, exports.loadBasis = loadBasis, exports;
+}({}, PIXI, PIXI, PIXI);
+Object.assign(this.PIXI, _pixi_basis);
+//# sourceMappingURL=basis.js.map