agentfootprint/dist/esm/provider-contract/types.js

The explainable agent framework — backtrack a wrong answer to the exact context that caused it (evidence, not guesses). Built on footprintjs.

/**
 * provider-contract/types — the Ports of the hexagonal architecture.
 *
 * Pattern: Adapter (GoF, Design Patterns ch. 4) + Ports-and-Adapters
 *          (Cockburn, 2005).
 * Role:    Contracts for every external dependency the library reaches for:
 *          LLM providers, memory stores, permission checkers, pricing tables.
 * Emits:   N/A (interfaces only).
 *
 * Concrete adapters (AnthropicProvider, PineconeStore, PermissionPolicy,
 * ...) implement these contracts. `core/` and `core-flow/` depend only on
 * these interfaces — never on concrete adapters.
 */
/**
 * The floor every known wire supports. Used for any provider that does not
 * declare `carriesInMessages` — a third-party adapter is assumed to carry
 * only what all of them do, never more.
 */
export const DEFAULT_CARRIES_IN_MESSAGES = Object.freeze([
    'user',
    'assistant',
]);
/**
 * Does this checker ask to be consulted about `capability`? (9.11.0)
 *
 * `'tool_call'` is always true — it has been enforced since v2.4 and needs no
 * declaration. Everything else is true only when the checker named it.
 * Absence is NO.
 */
export function checkerGoverns(checker, capability) {
    if (!checker)
        return false;
    if (capability === 'tool_call')
        return true;
    return checker.governs?.includes(capability) === true;
}
/**
 * The environment variable an executing snippet reads its staged inputs from —
 * a JSON object mapping each input's NAME to the path it landed at.
 *
 * Part of {@link CodeSession.stageInputs}'s contract rather than one adapter's
 * convention, and named here so an adapter uses the constant instead of
 * retyping the string. It is what makes model-written code portable across
 * backends: the code reads one variable, and every adapter that stages inputs
 * fills it the same way.
 */
export const STAGED_INPUTS_ENV = 'AF_STAGED_INPUTS';
/** Can this session accept staged inputs? The feature-detection law: read the
 *  member, never assume it from the adapter's name. */
export function canStageCodeInputs(session) {
    return typeof session.stageInputs === 'function';
}
/** Can this session read files back out? Read the member, never the adapter's name. */
export function canReadCodeFiles(session) {
    return typeof session.readFile === 'function';
}
/** Can this session run shell commands? Absent unless the runner was built
 *  with `commands: true`. Read the member, never the adapter's name. */
export function canRunCodeCommands(session) {
    return typeof session.runCommand === 'function';
}
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