ttsc/lib/internal/assertSafeExplicitCacheDirectory.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.assertSafeExplicitCacheDirectory = assertSafeExplicitCacheDirectory;
const node_path_1 = __importDefault(require("node:path"));
/**
 * Refuse an explicit cache directory whose wholesale removal could delete the
 * project or an entire filesystem volume.
 */
function assertSafeExplicitCacheDirectory(projectRoot, cacheDirectory) {
    const project = node_path_1.default.resolve(projectRoot);
    const cache = node_path_1.default.resolve(cacheDirectory);
    if (cache === node_path_1.default.parse(cache).root) {
        throw new Error(`ttsc: refusing to clean cache directory ${JSON.stringify(cache)} because filesystem roots are never valid cache directories`);
    }
    const relative = node_path_1.default.relative(cache, project);
    if (relative === "" ||
        (relative !== ".." &&
            !relative.startsWith(`..${node_path_1.default.sep}`) &&
            !node_path_1.default.isAbsolute(relative))) {
        throw new Error(`ttsc: refusing to clean cache directory ${JSON.stringify(cache)} because it equals or contains project root ${JSON.stringify(project)}; choose a dedicated cache directory`);
    }
}
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