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JavaScript@langchain/coreutilsformat
Moduleā—Since v1.0

utils/format

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import { ... } from "@langchain/core/utils/format";

Type Aliases

typeAlias
Converter: (input: T)

A function that converts data from one format to another.

This is commonly used for transforming message content blocks between different provider-specific formats and standardized internal representations.

typeAlias
ConverterPair

A pair of bidirectional conversion functions for transforming data between two formats.

This type is used throughout the message system to enable conversion between provider-specific message formats (like OpenAI, Anthropic, Google, etc.) and standardized internal content block representations. The encode function typically converts from a standard format to a provider-specific format, while decode converts from a provider-specific format back to the standard format.

View source on GitHub