Function writeConfigs

packages/e2e-tests/src/opencode-runner/spawn.ts:93–169

* Write opencode.json + magic-context.jsonc + tui.json into config/workdir. * * - opencode.json: registers our plugin via file:// spec, defines a mock-anthropic * provider and a mock model, sets provider.mock-anthropic.options.baseURL to the * mock server's URL. * - magic-context.jsonc: sta

(
    env: IsolatedEnv,
    mockProviderURL: string,
    opts: SpawnOptions,
)

 *   deterministically with modest scripted token counts.
 */
function writeConfigs(
    env: IsolatedEnv,
    mockProviderURL: string,
    opts: SpawnOptions,
): void {
    const pluginSpec = `file://${PLUGIN_ENTRY}`;

    const opencodeConfig: Record<string, unknown> = {
        $schema: "https://opencode.ai/config.json",
        plugin: [pluginSpec],
        // Disable telemetry-style checks that could reach out.
        autoupdate: false,
        // Match what `setup`/`doctor` writes for real users. OpenCode compaction
        // defaults to enabled; if we leave it on, magic-context's conflict
        // detector disables itself and the plugin becomes a no-op.
        compaction: { auto: false, prune: false },
        provider: {
            "mock-anthropic": {
                api: "@ai-sdk/anthropic",
                name: "Mock Anthropic",
                npm: "@ai-sdk/anthropic",
                env: [],
                options: {
                    apiKey: "test-key-not-real",
                    baseURL: mockProviderURL,
                },
                models: {
                    "mock-sonnet": {
                        id: "mock-sonnet",
                        name: "Mock Sonnet",
                        cost: { input: 0, output: 0 },
                        limit: { context: opts.modelContextLimit ?? 200000, output: 8192 },
                        // Advertise image + pdf input support so OpenCode does
                        // not substitute inline file parts with "this model
                        // does not support X input" text messages. Matches the
                        // real Sonnet capabilities this mock is standing in for.
                        modalities: {
                            input: ["text", "image", "pdf"],
                            output: ["text"],
                        },
                        options: {},
                    },
                },
            },
        },
        ...(opts.openCodeConfigExtra ?? {}),
    };

    // magic-context defaults tuned for fast triggering in tests.
    const magicContext = {
        $schema:
            "https://raw.githubusercontent.com/cortexkit/opencode-magic-context/master/assets/magic-context.schema.json",
        execute_threshold_percentage: 40,
        history_budget_percentage: 0.15,
        dreamer: { disable: true },
        sidekick: { disable: true },
        ...(opts.magicContextConfig ?? {}),
    };