Method load

tfjs-core/src/io/browser_files.ts:138–175

()

  }

  async load(): Promise<ModelArtifacts> {
    return new Promise((resolve, reject) => {
      const jsonReader = new FileReader();
      jsonReader.onload = (event: Event) => {
        // tslint:disable-next-line:no-any
        const modelJSON = JSON.parse((event.target as any).result) as ModelJSON;

        const modelTopology = modelJSON.modelTopology;
        if (modelTopology == null) {
          reject(new Error(`modelTopology field is missing from file ${
              this.jsonFile.name}`));
          return;
        }

        const weightsManifest = modelJSON.weightsManifest;
        if (weightsManifest == null) {
          reject(new Error(`weightManifest field is missing from file ${
              this.jsonFile.name}`));
          return;
        }

        if (this.weightsFiles.length === 0) {
          resolve({modelTopology});
          return;
        }

        const modelArtifactsPromise = getModelArtifactsForJSON(
            modelJSON, (weightsManifest) => this.loadWeights(weightsManifest));
        resolve(modelArtifactsPromise);
      };

      jsonReader.onerror = error => reject(
          `Failed to read model topology and weights manifest JSON ` +
          `from file '${this.jsonFile.name}'. BrowserFiles supports loading ` +
          `Keras-style tf.Model artifacts only.`);
      jsonReader.readAsText(this.jsonFile);
    });
  }

  private loadWeights(weightsManifest: WeightsManifestConfig): Promise<[
    /* weightSpecs */ WeightsManifestEntry[], WeightData,