@langchain/langgraph
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{"version":3,"file":"any_value.cjs","names":["BaseChannel","EmptyChannelError"],"sources":["../../src/channels/any_value.ts"],"sourcesContent":["import { EmptyChannelError } from \"../errors.js\";\nimport { BaseChannel } from \"./base.js\";\n\n/**\n * Stores the last value received, assumes that if multiple values are received, they are all equal.\n *\n * Note: Unlike 'LastValue' if multiple nodes write to this channel in a single step, the values\n * will be continuously overwritten.\n */\nexport class AnyValue<Value> extends BaseChannel<Value, Value, Value> {\n lc_graph_name = \"AnyValue\";\n\n // value is an array so we don't misinterpret an update to undefined as no write\n value: [Value] | [] = [];\n\n constructor() {\n super();\n }\n\n fromCheckpoint(checkpoint?: Value) {\n const empty = new AnyValue<Value>();\n if (typeof checkpoint !== \"undefined\") {\n empty.value = [checkpoint];\n }\n return empty as this;\n }\n\n update(values: Value[]): boolean {\n if (values.length === 0) {\n const updated = this.value.length > 0;\n this.value = [];\n return updated;\n }\n\n // eslint-disable-next-line prefer-destructuring\n this.value = [values[values.length - 1]];\n return true;\n }\n\n get(): Value {\n if (this.value.length === 0) {\n throw new EmptyChannelError();\n }\n return this.value[0];\n }\n\n checkpoint(): Value {\n if (this.value.length === 0) {\n throw new EmptyChannelError();\n }\n return this.value[0];\n }\n\n isAvailable(): boolean {\n return this.value.length !== 0;\n }\n}\n"],"mappings":";;;;;;;;;AASA,IAAa,WAAb,MAAa,iBAAwBA,aAAAA,YAAiC;CACpE,gBAAgB;CAGhB,QAAsB,EAAE;CAExB,cAAc;AACZ,SAAO;;CAGT,eAAe,YAAoB;EACjC,MAAM,QAAQ,IAAI,UAAiB;AACnC,MAAI,OAAO,eAAe,YACxB,OAAM,QAAQ,CAAC,WAAW;AAE5B,SAAO;;CAGT,OAAO,QAA0B;AAC/B,MAAI,OAAO,WAAW,GAAG;GACvB,MAAM,UAAU,KAAK,MAAM,SAAS;AACpC,QAAK,QAAQ,EAAE;AACf,UAAO;;AAIT,OAAK,QAAQ,CAAC,OAAO,OAAO,SAAS,GAAG;AACxC,SAAO;;CAGT,MAAa;AACX,MAAI,KAAK,MAAM,WAAW,EACxB,OAAM,IAAIC,eAAAA,mBAAmB;AAE/B,SAAO,KAAK,MAAM;;CAGpB,aAAoB;AAClB,MAAI,KAAK,MAAM,WAAW,EACxB,OAAM,IAAIA,eAAAA,mBAAmB;AAE/B,SAAO,KAAK,MAAM;;CAGpB,cAAuB;AACrB,SAAO,KAAK,MAAM,WAAW"}