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Addition of OutputParser for FewShotPromptTemplate

This commit is contained in:
vinodkiran 2023-10-25 19:52:50 +05:30
parent 4654f69951
commit b8b8f09bbc
2 changed files with 10 additions and 14 deletions
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14
packages/components/nodes/chains/LLMChain/LLMChain.ts
View File

@ -4,7 +4,7 @@ import { LLMChain } from 'langchain/chains'
import { BaseLanguageModel } from 'langchain/base_language'
import { ConsoleCallbackHandler, CustomChainHandler, additionalCallbacks } from '../../../src/handler'
import { BaseOutputParser } from 'langchain/schema/output_parser'
import { ChatPromptTemplate, PromptTemplate, SystemMessagePromptTemplate } from 'langchain/prompts'
import { ChatPromptTemplate, FewShotPromptTemplate, PromptTemplate, SystemMessagePromptTemplate } from 'langchain/prompts'
class LLMChain_Chains implements INode {
label: string
@ -99,29 +99,25 @@ class LLMChain_Chains implements INode {
const outputParser = nodeData.inputs?.outputParser as BaseOutputParser
if (outputParser && chain.prompt) {
const formatInstructions = outputParser.getFormatInstructions()
chain.prompt.inputVariables.push('format_instructions')
if (chain.prompt instanceof PromptTemplate) {
let pt = chain.prompt
pt.template = pt.template + '\n{format_instructions}'
chain.prompt.partialVariables = { format_instructions: formatInstructions }
// eslint-disable-next-line no-console
console.log('prompt :: ', chain.prompt)
} else if (chain.prompt instanceof ChatPromptTemplate) {
let pt = chain.prompt
pt.promptMessages.forEach((msg) => {
if (msg instanceof SystemMessagePromptTemplate) {
;(msg.prompt as any).partialVariables = { format_instructions: outputParser.getFormatInstructions() }
;(msg.prompt as any).template = ((msg.prompt as any).template + '\n{format_instructions}') as string
// eslint-disable-next-line no-console
console.log(msg)
}
})
//pt.template = pt.template + '\n{format_instructions}'
} else if (chain.prompt instanceof FewShotPromptTemplate) {
chain.prompt.examplePrompt.partialVariables = { format_instructions: formatInstructions }
chain.prompt.examplePrompt.template = chain.prompt.examplePrompt.template + '\n{format_instructions}'
}
chain.prompt.inputVariables.push('format_instructions')
promptValues = { ...promptValues, format_instructions: outputParser.getFormatInstructions() }
// eslint-disable-next-line no-console
console.log('promptValues :: ', promptValues)
}
const res = await runPrediction(inputVariables, chain, input, promptValues, options, nodeData, outputParser)
// eslint-disable-next-line no-console

8
packages/components/nodes/outputparsers/structured/StructuredOutputParser.ts
View File

@ -62,15 +62,15 @@ class StructuredOutputParser implements INode {
if (structure) {
try {
parsedStructure = JSON.parse(structure)
} catch (exception) {
throw new Error('Invalid JSON in StructuredOutputParser: ' + exception)
}
}
if (structureType === 'fromZodSchema') {
return LangchainStructuredOutputParser.fromZodSchema(parsedStructure)
} else {
return LangchainStructuredOutputParser.fromNamesAndDescriptions(parsedStructure)
}
} catch (exception) {
throw new Error('Invalid JSON in StructuredOutputParser: ' + exception)
}
}
}
}