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