@ayan4m1/rollup-plugin-multi-input/dist/plugin.js

A rollup plugin which allows 1:1 mapping of input to output files.

import fastGlob from 'fast-glob';
import path from 'path';
const pluginName = '@ayan4m1/rollup-plugin-multi-input';
// eslint-disable-next-line import-x/no-named-as-default-member
const { sync } = fastGlob;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const isString = (value) => typeof value === 'string';
/**
 * default multi-input Options
 * */
const defaultOptions = {
    // `path.sep` is used for windows support
    relative: `src${path.sep}`,
};
// extract the output file name from a file name
const outputFileName = (filePath) => filePath.replace(/\.[^/.]+$/, '').replace(/\\/g, '/');
/**
 *  multiInput is a rollup plugin to use multiple entry point and preserve the directory
 *  structure in the dist folder
 * */
const multiInput = (options = defaultOptions) => {
    const { glob: globOptions, relative = defaultOptions.relative, transformOutputPath, } = options;
    return {
        name: pluginName,
        options(conf) {
            // flat to enable input to be a string or an array
            const inputs = [conf.input].flat();
            // separate globs inputs string from others to enable input to be a mixed array too
            const globs = inputs.filter(isString);
            const others = inputs.filter((value) => !isString(value));
            const normalizedGlobs = globs.map((glob) => glob.replace(/\\/g, '/'));
            // get files from the globs strings and return as a Rollup entries Object
            const entries = sync(normalizedGlobs, globOptions).map((name) => {
                const filePath = path.relative(relative, name);
                const isRelative = !filePath.startsWith(`..${path.sep}`);
                const relativeFilePath = isRelative
                    ? filePath
                    : path.relative(`.${path.sep}`, name);
                if (transformOutputPath) {
                    return [
                        outputFileName(transformOutputPath(relativeFilePath, name)),
                        name,
                    ];
                }
                return [outputFileName(relativeFilePath), name];
            });
            const input = Object.assign({}, Object.fromEntries(entries), 
            // add no globs input to the result
            ...others);
            // return the new configuration with the glob input and the non string inputs
            return {
                ...conf,
                input,
            };
        },
    };
};
export default multiInput;