@langchain/core/dist/utils/testing/embeddings.cjs.map

Core LangChain.js abstractions and schemas

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The embeddings are generated by converting each\n * document into chunks, calculating a numerical value for each chunk, and\n * returning an array of these values as the embedding.\n */\nexport class SyntheticEmbeddings\n  extends Embeddings\n  implements SyntheticEmbeddingsParams\n{\n  vectorSize: number;\n\n  constructor(params?: SyntheticEmbeddingsParams) {\n    super(params ?? {});\n    this.vectorSize = params?.vectorSize ?? 4;\n  }\n\n  /**\n   * Generates synthetic embeddings for a list of documents.\n   * @param documents List of documents to generate embeddings for.\n   * @returns A promise that resolves with a list of synthetic embeddings for each document.\n   */\n  async embedDocuments(documents: string[]): Promise<number[][]> {\n    return Promise.all(documents.map((doc) => this.embedQuery(doc)));\n  }\n\n  /**\n   * Generates a synthetic embedding for a document. The document is\n   * converted into chunks, a numerical value is calculated for each chunk,\n   * and an array of these values is returned as the embedding.\n   * @param document The document to generate an embedding for.\n   * @returns A promise that resolves with a synthetic embedding for the document.\n   */\n  async embedQuery(document: string): Promise<number[]> {\n    let doc = document;\n\n    // Only use the letters (and space) from the document, and make them lower case\n    doc = doc.toLowerCase().replaceAll(/[^a-z ]/g, \"\");\n\n    // Pad the document to make sure it has a divisible number of chunks\n    const padMod = doc.length % this.vectorSize;\n    const padGapSize = padMod === 0 ? 0 : this.vectorSize - padMod;\n    const padSize = doc.length + padGapSize;\n    doc = doc.padEnd(padSize, \" \");\n\n    // Break it into chunks\n    const chunkSize = doc.length / this.vectorSize;\n    const docChunk = [];\n    for (let co = 0; co < doc.length; co += chunkSize) {\n      docChunk.push(doc.slice(co, co + chunkSize));\n    }\n\n    // Turn each chunk into a number\n    const ret: number[] = docChunk.map((s) => {\n      let sum = 0;\n      // Get a total value by adding the value of each character in the string\n      for (let co = 0; co < s.length; co += 1) {\n        sum += s === \" \" ? 0 : s.charCodeAt(co);\n      }\n      // Reduce this to a number between 0 and 25 inclusive\n      // Then get the fractional number by dividing it by 26\n      const ret = (sum % 26) / 26;\n      return ret;\n    });\n\n    return ret;\n  }\n}\n\n/**\n * A class that provides fake embeddings by overriding the embedDocuments\n * and embedQuery methods to return fixed values.\n */\nexport class FakeEmbeddings extends Embeddings {\n  constructor(params?: EmbeddingsParams) {\n    super(params ?? {});\n  }\n\n  /**\n   * Generates fixed embeddings for a list of documents.\n   * @param documents List of documents to generate embeddings for.\n   * @returns A promise that resolves with a list of fixed embeddings for each document.\n   */\n  embedDocuments(documents: string[]): Promise<number[][]> {\n    return Promise.resolve(documents.map(() => [0.1, 0.2, 0.3, 0.4]));\n  }\n\n  /**\n   * Generates a fixed embedding for a query.\n   * @param _ The query to generate an embedding for.\n   * @returns A promise that resolves with a fixed embedding for the query.\n   */\n  embedQuery(_: string): Promise<number[]> {\n    return Promise.resolve([0.1, 0.2, 0.3, 0.4]);\n  }\n}\n"],"mappings":";;;;;;;;;;AAiBA,IAAa,sBAAb,cACUA,8BAEV;CACE;CAEA,YAAYC,QAAoC;EAC9C,MAAM,UAAU,CAAE,EAAC;EACnB,KAAK,aAAa,QAAQ,cAAc;CACzC;;;;;;CAOD,MAAM,eAAeC,WAA0C;AAC7D,SAAO,QAAQ,IAAI,UAAU,IAAI,CAAC,QAAQ,KAAK,WAAW,IAAI,CAAC,CAAC;CACjE;;;;;;;;CASD,MAAM,WAAWC,UAAqC;EACpD,IAAI,MAAM;EAGV,MAAM,IAAI,aAAa,CAAC,WAAW,YAAY,GAAG;EAGlD,MAAM,SAAS,IAAI,SAAS,KAAK;EACjC,MAAM,aAAa,WAAW,IAAI,IAAI,KAAK,aAAa;EACxD,MAAM,UAAU,IAAI,SAAS;EAC7B,MAAM,IAAI,OAAO,SAAS,IAAI;EAG9B,MAAM,YAAY,IAAI,SAAS,KAAK;EACpC,MAAM,WAAW,CAAE;AACnB,OAAK,IAAI,KAAK,GAAG,KAAK,IAAI,QAAQ,MAAM,WACtC,SAAS,KAAK,IAAI,MAAM,IAAI,KAAK,UAAU,CAAC;EAI9C,MAAMC,MAAgB,SAAS,IAAI,CAAC,MAAM;GACxC,IAAI,MAAM;AAEV,QAAK,IAAI,KAAK,GAAG,KAAK,EAAE,QAAQ,MAAM,GACpC,OAAO,MAAM,MAAM,IAAI,EAAE,WAAW,GAAG;GAIzC,MAAMC,QAAO,MAAM,KAAM;AACzB,UAAOA;EACR,EAAC;AAEF,SAAO;CACR;AACF;;;;;AAMD,IAAa,iBAAb,cAAoCL,8BAAW;CAC7C,YAAYM,QAA2B;EACrC,MAAM,UAAU,CAAE,EAAC;CACpB;;;;;;CAOD,eAAeJ,WAA0C;AACvD,SAAO,QAAQ,QAAQ,UAAU,IAAI,MAAM;GAAC;GAAK;GAAK;GAAK;EAAI,EAAC,CAAC;CAClE;;;;;;CAOD,WAAWK,GAA8B;AACvC,SAAO,QAAQ,QAAQ;GAAC;GAAK;GAAK;GAAK;EAAI,EAAC;CAC7C;AACF"}