Class HandlebarsPromptTemplate<RunInput>

Type Parameters

RunInput extends Toolkit = any

Hierarchy (view full)

CustomFormatPromptTemplate<RunInput>
- HandlebarsPromptTemplate

Index

Constructors

Properties

renderer templateValidator?

Methods

format fromTemplate

Constructors

constructor

new HandlebarsPromptTemplate<RunInput>(input): HandlebarsPromptTemplate<RunInput>
Type Parameters
- RunInput extends InputValues = any
Parameters
- input: CustomFormatPromptTemplateInput<RunInput>
Returns HandlebarsPromptTemplate<RunInput>
Inherited from CustomFormatPromptTemplate.constructor
- Defined in langchain/src/experimental/prompts/custom_format.ts:32

Properties

renderer

renderer: ((template, values) => string)

Type declaration

- (template, values): string
- Parameters
  - template: string
  - values: InputValues
  Returns string

`Optional` templateValidator

templateValidator?: ((template, inputVariables) => boolean)

Type declaration

- (template, inputVariables): boolean
- Parameters
  - template: string
  - inputVariables: string[]
  Returns boolean

Methods

format

format(values): Promise<string>
Formats the prompt template with the provided values.
Parameters
- values: TypedPromptInputValues<RunInput>
  The values to be used to format the prompt template.
Returns Promise<string>
A promise that resolves to a string which is the formatted prompt.
Inherited from CustomFormatPromptTemplate.format
- Defined in langchain/src/experimental/prompts/custom_format.ts:91

`Static` fromTemplate

fromTemplate<RunInput>(template, params?): CustomFormatPromptTemplate<RunInput extends Symbol
? never
: RunInput, any>
Load prompt template from a template
Type Parameters
- RunInput extends InputValues = Record<string, any>
Parameters
- template: string
- Optional params: Omit<HandlebarsPromptTemplateInput<RunInput>, "template" | "inputVariables" | "customParser" | "templateValidator" | "renderer">
Returns CustomFormatPromptTemplate<RunInput extends Symbol
? never
: RunInput, any>
Overrides CustomFormatPromptTemplate.fromTemplate
- Defined in langchain/src/experimental/prompts/handlebars.ts:74

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