@coinbase/cdp-sdk/_cjs/x402/builder-code.js

SDK for interacting with the Coinbase Developer Platform Wallet API

"use strict";
/*
 * Validation and attribution helpers for the x402 builder-code extension.
 *
 * Upstream validates codes with `BUILDER_CODE_PATTERN.test()`, which coerces its
 * argument — `42` and `["my_app"]` both stringify into something the pattern
 * accepts. Config values reaching the SDK are not always typed (a `configPath`
 * file is untyped JSON), so the type is checked here before the pattern runs.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.CDP_SDK_SERVER_BUILDER_CODE = exports.CDP_SDK_CLIENT_BUILDER_CODE = void 0;
exports.assertBuilderCode = assertBuilderCode;
exports.toServiceBuilderCodes = toServiceBuilderCodes;
exports.declareServerBuilderCodeExtension = declareServerBuilderCodeExtension;
const builder_code_1 = require("@x402/extensions/builder-code");
/** Shared tail of every builder-code rejection message. */
const CODE_REQUIREMENT = "Must be a string of 1-32 characters, lowercase alphanumeric and underscores only.";
const MAX_CONFIGURED_SERVICE_BUILDER_CODES = 4;
/**
 * Service code every `CdpX402Client` attaches to `s`, alongside any codes the
 * caller configures, for on-chain attribution of CDP SDK-originated payments.
 */
exports.CDP_SDK_CLIENT_BUILDER_CODE = "cdp_sdk_client";
/**
 * Service code every `createX402Server` EVM route attaches to `s`, alongside
 * the developer's own app code (`a`) if configured, for on-chain attribution
 * of payments received through the CDP SDK.
 */
exports.CDP_SDK_SERVER_BUILDER_CODE = "cdp_sdk_server";
/**
 * Asserts that a value is a syntactically valid builder code.
 *
 * @param code - Candidate builder code, possibly from untyped JSON.
 * @throws If `code` is not a string matching `^[a-z0-9_]{1,32}$`.
 */
function assertBuilderCode(code) {
    if (typeof code !== "string" || !builder_code_1.BUILDER_CODE_PATTERN.test(code)) {
        throw new Error(`Invalid builder code: ${JSON.stringify(code)}. ${CODE_REQUIREMENT}`);
    }
}
/**
 * Normalizes a client `builderCode` config value into a non-empty array of
 * validated service codes.
 *
 * @param builderCode - A single service code, or an array of them.
 * @returns The validated service codes.
 * @throws If any code is invalid, or if the array has fewer than one or more
 * than four codes.
 */
function toServiceBuilderCodes(builderCode) {
    const codes = Array.isArray(builderCode) ? builderCode : [builderCode];
    if (codes.length === 0) {
        throw new Error("Invalid builder code: []. Supply at least one code, or omit builderCode to use only the SDK's service code.");
    }
    if (codes.length > MAX_CONFIGURED_SERVICE_BUILDER_CODES) {
        throw new Error(`Invalid builder code: at most ${MAX_CONFIGURED_SERVICE_BUILDER_CODES} configured service codes are allowed.`);
    }
    for (const code of codes) {
        assertBuilderCode(code);
    }
    return codes;
}
/**
 * Builds the `builder-code` extension declaration for `createX402Server`
 * routes: the developer's own app code (`a`), if configured, alongside this
 * SDK's own service code (`s`) for on-chain attribution.
 *
 * @param appCode - Developer-configured app code (already validated), or
 * `undefined` to omit `a` and advertise only the SDK's own service code.
 * @returns Extension declaration for `PaymentRequired.extensions["builder-code"]`.
 */
function declareServerBuilderCodeExtension(appCode) {
    return {
        info: {
            ...(appCode !== undefined && { a: appCode }),
            s: [exports.CDP_SDK_SERVER_BUILDER_CODE],
        },
        schema: builder_code_1.BUILDER_CODE_SCHEMA,
    };
}
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