inject-assets-webpack-plugin/lib/createAsset.js

/**
 * @typedef {Object} WebpackAsset
 * @param {Function} size
 * @param {Function} source
 */

/**
 * Creates a webpack asset object from a string. If the asset is falsy, the function returns
 * undefined.
 *
 * @param {string} assetContent - the content for the webpack asset
 * @param {string} [target] - a target name to be included in an eventual warning
 * @return {WebpackAsset|undefined}
 */
function createAsset (assetContent, target) {
    if (!assetContent) {
        const message = [
            'the asset content for the target',
            `'${target}'`,
            'is empty'
        ]
            .filter((part) => !!part)
            .join(' ');

        console.warn(message);
        return;
    }

    return {
        size () {
            return assetContent.length;
        },

        source () {
            return assetContent;
        }
    };
}

module.exports = createAsset;