webpack-import-map-plugin/tests/helpers/copy-plugin-mock.js

A webpack plugin to help generate import maps for outputted entry files, based on webpack-manifest-plugin

function FakeCopyWebpackPlugin () {
}

FakeCopyWebpackPlugin.prototype.apply = function (compiler) {
    const emit = function (compilation, callback) {
        const compiledMock = '// some compilation result\n';
        compilation.assets['third.party.js'] = {
            size: function () {
                return compiledMock.length;
            },
            source: function () {
                return compiledMock;
            }
        };

        callback();
    };

    if (compiler.hooks) {
        compiler.hooks.emit.tapAsync('FakeCopyWebpackPlugin', emit);
    } else {
        compiler.plugin('emit', emit);
    }
};

module.exports = FakeCopyWebpackPlugin;