replace-in-file/dist/src/helpers/process.js

A simple utility to quickly replace text in one or more files.

/**
 * Run processors
 */
export function runProcessors(contents, processor, file) {
    //Ensure array and prepare result
    const processors = Array.isArray(processor) ? processor : [processor];
    //Run processors
    const newContents = processors
        .reduce((contents, processor) => processor(contents, file), contents);
    //Check if contents changed and prepare result
    const hasChanged = (newContents !== contents);
    const result = { file, hasChanged };
    //Return along with new contents
    return [result, newContents];
}
/**
 * Helper to process in a single file (sync)
 */
export function processSync(file, processor, config) {
    //Extract relevant config and read file contents
    const { encoding, dry, fsSync } = config;
    const contents = fsSync.readFileSync(file, encoding);
    //Process contents
    const [result, newContents] = runProcessors(contents, processor, file);
    //Contents changed and not a dry run? Write to file
    if (result.hasChanged && !dry) {
        fsSync.writeFileSync(file, newContents, encoding);
    }
    //Return result
    return result;
}
/**
 * Run processors (async)
 */
export async function runProcessorsAsync(contents, processorAsync, file) {
    //Ensure array and prepare result
    const processorAsyncs = Array.isArray(processorAsync) ? processorAsync : [processorAsync];
    //Run processors
    let newContents = contents;
    for (const processor of processorAsyncs) {
        newContents = await processor(newContents, file);
    }
    //Check if contents changed and prepare result
    const hasChanged = (newContents !== contents);
    const result = { file, hasChanged };
    //Return along with new contents
    return [result, newContents];
}
/**
 * Helper to process in a single file (async)
 */
export async function processAsync(file, processor, config) {
    //Extract relevant config and read file contents
    const { encoding, dry, fs } = config;
    const contents = await fs.readFile(file, encoding);
    //Make replacements
    const [result, newContents] = await runProcessorsAsync(contents, processor, file);
    //Contents changed and not a dry run? Write to file
    if (result.hasChanged && !dry) {
        await fs.writeFile(file, newContents, encoding);
    }
    //Return result
    return result;
}