msw-mock-gen/dist/sterilize.js

A Vite plugin that automatically generates MSW (Mock Service Worker) handlers from your API calls by watching TypeScript/JavaScript files and parsing URL patterns. Supports Vite 2+ and Node.js 12+ for maximum compatibility.

import { existsSync, unlinkSync } from "fs";
import { join } from "path";
/**
 * Deletes a file if it exists
 * @param filePath - Path to the file to delete
 * @param log - Logging function
 */
export const deleteFileIfExists = (filePath, log) => {
    if (existsSync(filePath)) {
        try {
            unlinkSync(filePath);
            log(`MSW Mock Gen: Deleted ${filePath}`);
        }
        catch (error) {
            console.error(`MSW Mock Gen: Error deleting file ${filePath}:`, error);
        }
    }
};
/**
 * Sterilizes all output directories by deleting old generated files
 * @param root - Project root directory
 * @param configs - Array of configurations
 * @param mergeHandlers - Whether merging is enabled
 * @param topLevelOutputFolder - Top-level output folder for merged handlers
 * @param topLevelOutputFileName - Top-level output file name for merged handlers
 * @param log - Logging function
 */
export const sterilize = (root, configs, mergeHandlers, topLevelOutputFolder, topLevelOutputFileName, log) => {
    const startTime = Date.now();
    log("MSW Mock Gen: Sterilizing output directories...");
    // Delete files from each config's output folder (but preserve .cache when merging)
    for (const config of configs) {
        const { outputFolder = "src/data/queries/mocks", outputFileName = "mswHandlers.generated", } = config;
        const outputPath = join(root, outputFolder);
        // Only delete files if we're not merging (when merging, files go to .cache)
        if (!mergeHandlers) {
            // Delete individual generated files
            deleteFileIfExists(join(outputPath, "queryHandlers.generated.ts"), log);
            deleteFileIfExists(join(outputPath, "mutationHandlers.generated.ts"), log);
            deleteFileIfExists(join(outputPath, `${outputFileName}.ts`), log);
        }
    }
    // Delete merged handler files if merging is enabled
    if (mergeHandlers) {
        const topLevelOutputPath = join(root, topLevelOutputFolder);
        // Delete merged generated files (but preserve .cache directory)
        deleteFileIfExists(join(topLevelOutputPath, "queryHandlers.generated.ts"), log);
        deleteFileIfExists(join(topLevelOutputPath, "mutationHandlers.generated.ts"), log);
        deleteFileIfExists(join(topLevelOutputPath, `${topLevelOutputFileName}.ts`), log);
    }
    const endTime = Date.now();
    const duration = endTime - startTime;
    log(`MSW Mock Gen: Sterilization complete (${duration}ms)`);
};