import { getProjectRequire } from '@intlayer/config';
import type { IntlayerConfig } from '@intlayer/types';
let cachedFormatCommand: string | undefined | null = null;
export const detectFormatCommand = (
configuration: IntlayerConfig,
projectRequireProp?: NodeJS.Require
) => {
const { formatCommand, baseDir } = configuration.content;
const projectRequire = projectRequireProp ?? getProjectRequire(baseDir);
// Priority: Explicit configuration
// We do not cache this because the user might change their config file active-session.
if (formatCommand) {
return formatCommand;
}
// Priority: Cached detection
// If not null, we have already performed the expensive checks.
if (cachedFormatCommand !== null) {
return cachedFormatCommand;
}
// Perform Detection
// Try Prettier
try {
projectRequire.resolve('prettier');
cachedFormatCommand = 'prettier --write "{{file}}" --log-level silent';
return cachedFormatCommand;
} catch (_error) {
// Prettier not found, continue
}
// Try Biome
try {
projectRequire.resolve('biome');
cachedFormatCommand = 'biome format "{{file}}" --write --log-level none';
return cachedFormatCommand;
} catch (_error) {
// Biome not found, continue
}
// Try ESLint
try {
projectRequire.resolve('eslint');
cachedFormatCommand = 'eslint --fix "{{file}}" --quiet';
return cachedFormatCommand;
} catch (_error) {
// ESLint not found
}
// No formatter found
// Set to undefined (not null) so we know we checked and found nothing.
cachedFormatCommand = undefined;
return undefined;
};
