53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
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import { BaseChain } from "./base.js";
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/**
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* Class that represents a transform chain. It extends the `BaseChain`
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* class and implements the `TransformChainFields` interface. It provides
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* a way to transform input values to output values using a specified
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* transform function.
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*
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* @deprecated
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* Switch to {@link https://js.langchain.com/docs/expression_language/ | expression language}.
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* Will be removed in 0.2.0
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*/
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export class TransformChain extends BaseChain {
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static lc_name() {
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return "TransformChain";
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}
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_chainType() {
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return "transform";
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}
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get inputKeys() {
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return this.inputVariables;
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}
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get outputKeys() {
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return this.outputVariables;
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}
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constructor(fields) {
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super(fields);
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Object.defineProperty(this, "transformFunc", {
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enumerable: true,
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configurable: true,
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writable: true,
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value: void 0
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});
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Object.defineProperty(this, "inputVariables", {
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enumerable: true,
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configurable: true,
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writable: true,
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value: void 0
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});
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Object.defineProperty(this, "outputVariables", {
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enumerable: true,
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configurable: true,
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writable: true,
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value: void 0
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});
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this.transformFunc = fields.transform;
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this.inputVariables = fields.inputVariables;
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this.outputVariables = fields.outputVariables;
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}
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async _call(values, runManager) {
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return this.transformFunc(values, runManager?.getChild("transform"));
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}
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}
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