EFLKumo
b028ba8e03
The process is supervised: on exit after a successful initialize it is spawned again with exponential backoff (500ms to 30s), open documents are re-sent as didOpen before the new session is announced, and requests caught by the crash wait for it and retry. A crash more than a minute after the previous one starts a fresh streak; reaching the streak limit (default 3) ends restarting for good, after which every request fails with an LspError saying so. Restarts and give-ups are logged and forwarded to the MCP client. Writes to the child's stdin go through a PassThrough so a broken pipe ends the session instead of surfacing as an unhandled rejection.
28 lines
942 B
TypeScript
28 lines
942 B
TypeScript
import { fileURLToPath } from "node:url";
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import { Effect, FileSystem, Layer, Path } from "effect";
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import { LanguageServer, type Options } from "../../src/lsp/LanguageServer.ts";
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const server = fileURLToPath(new URL("./server.ts", import.meta.url));
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/** A temporary workspace with the given files, served by the fixture language server. */
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export const workspace = (
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files: Record<string, string>,
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options?: Pick<Options, "restart">,
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) =>
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Layer.unwrap(
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Effect.gen(function* () {
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const fs = yield* FileSystem.FileSystem;
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const path = yield* Path.Path;
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const root = yield* fs.makeTempDirectoryScoped({ prefix: "lsp-mcp-" });
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for (const [name, content] of Object.entries(files)) {
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yield* fs.writeFileString(path.join(root, name), content);
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}
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return LanguageServer.layer({
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command: process.execPath,
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args: [server],
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root,
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...options,
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});
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}),
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);
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