@suluk/cost - v0.2.0
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    Interface CostMeterOptions

    interface CostMeterOptions {
        sink: CostSink;
        costs: Record<string, CostModel>;
        operationOf: (c: Context) => string | undefined;
        principalOf?: (c: Context) => string | undefined;
        actionHeader?: string;
        now?: () => number;
    }
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    sink costs operationOf principalOf? actionHeader? now?

    Properties

    sink: CostSink
    costs: Record<string, CostModel>

    operation name → its declared cost model.

    operationOf: (c: Context) => string | undefined

    Resolve the operation name for a request (e.g. c.get("operation"), or a matcher).

    principalOf?: (c: Context) => string | undefined

    Resolve the principal/user id (default: none).

    actionHeader?: string

    Header carrying the frontend action id (default "x-suluk-action").

    now?: () => number

    Wall-clock now (ms). Pass () => Date.now() in production; a fixed fn in tests for reproducibility.

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