ttsc/lib/compiler/internal/resolveBinary.js

General-purpose TypeScript-Go compiler, runtime, plugin host, and LSP host.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.resolveBinary = resolveBinary;
const node_fs_1 = __importDefault(require("node:fs"));
const node_path_1 = __importDefault(require("node:path"));
/**
 * Resolve the ttsc helper binary path, or null when unavailable.
 *
 * Resolution order:
 *
 * 1. `TTSC_BINARY` env var — must be an absolute path when set.
 * 2. The per-platform npm package `@ttsc/<platform>-<arch>/bin/ttsc[.exe]`.
 * 3. A `ttsc-native[.exe]` sibling of this package's root (dev/CI layout).
 */
function resolveBinary(opts = {}) {
    const env = opts.env ?? process.env;
    if (env.TTSC_BINARY && node_path_1.default.isAbsolute(env.TTSC_BINARY)) {
        return env.TTSC_BINARY;
    }
    try {
        return require.resolve(`@ttsc/${process.platform}-${process.arch}/bin/${process.platform === "win32" ? "ttsc.exe" : "ttsc"}`);
    }
    catch {
        /* fall through */
    }
    const local = defaultLocalBinaryPath();
    if (local)
        return local;
    return null;
}
/**
 * Return the path to the dev-layout `ttsc-native[.exe]` binary adjacent to the
 * package root, or null when the file does not exist.
 */
function defaultLocalBinaryPath() {
    const root = packageRootDir();
    const candidate = node_path_1.default.resolve(root, "..", "native", process.platform === "win32" ? "ttsc-native.exe" : "ttsc-native");
    return node_fs_1.default.existsSync(candidate) ? candidate : null;
}
/**
 * Return the real, absolute path of the `packages/ttsc` package root by walking
 * two levels up from `__dirname` (which lives in `src/compiler/internal`).
 */
function packageRootDir() {
    const moduleDir = node_path_1.default.resolve(__dirname, "..", "..");
    return node_fs_1.default.realpathSync.native?.(moduleDir) ?? node_fs_1.default.realpathSync(moduleDir);
}
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