packages/tool-write-file/src/extension.ts


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import { execBackendHandle } from "@dispatch/exec-backend";
import type { Extension } from "@dispatch/kernel";
import { createWriteFileTool } from "./write-file.js";

export const extension: Extension = {
	manifest: {
		id: "tool-write-file",
		name: "Write File Tool",
		version: "0.0.0",
		apiVersion: "^0.1.0",
		trust: "bundled",
		activation: "eager",
		capabilities: { fs: true },
		contributes: { tools: ["write_file"] },
		// Host activates exec-backend first → host.getService at activation is safe.
		dependsOn: ["exec-backend"],
	},
	activate(host) {
		const resolveBackend = host.getService(execBackendHandle);
		host.defineTool(createWriteFileTool({ resolveBackend, workdir: process.cwd() }));
	},
};