import { readFileSync } from 'fs';
import { join } from 'path';
const SUPPORTED_KEYS = new Set([
'tools',
'minimal',
'debugLogs',
'disableTelemetry',
'transport',
'port',
'experimentalPolygraph',
]);
export type NxMcpConfig = {
tools?: string[];
minimal?: boolean;
debugLogs?: boolean;
disableTelemetry?: boolean;
transport?: 'stdio' | 'sse' | 'http';
port?: number;
experimentalPolygraph?: boolean;
};
export function loadConfigFile(workspacePath: string): NxMcpConfig {
const configPath = join(workspacePath, '.nx', 'nx-mcp-config.json');
let raw: string;
try {
raw = readFileSync(configPath, 'utf-8');
} catch {
return {};
}
let parsed: unknown;
try {
parsed = JSON.parse(raw);
} catch {
return {};
}
if (typeof parsed !== 'object' || parsed === null || Array.isArray(parsed)) {
return {};
}
const config: NxMcpConfig = {};
for (const [key, value] of Object.entries(parsed)) {
if (SUPPORTED_KEYS.has(key)) {
(config as Record<string, unknown>)[key] = value;
}
}
return config;
}
export function configToArgs(config: NxMcpConfig): string[] {
const args: string[] = [];
for (const [key, value] of Object.entries(config)) {
if (typeof value === 'boolean') {
args.push(value ? `--${key}` : `--no-${key}`);
} else if (typeof value === 'string' || typeof value === 'number') {
args.push(`--${key}`, String(value));
} else if (Array.isArray(value)) {
for (const item of value) {
args.push(`--${key}`, String(item));
}
}
}
return args;
}
