transpile.js

'use strict';

const watch = require('transpile-watch');

watch({
    persistent: !(process.argv[2] === 'once'),
    what: process.argv[3],
    ignore: (process.argv[4] && process.argv[4] !== 'null') ? process.argv[4] : null,
    extension: '.es6',
    createOutPath: (inPath) => {
        return inPath.replace(/.es6$/, '.js');
    },
    transform: (inPath, outPath) => {
        const sourceMapPath = `${inPath}.map`;
        return [
            `babel --source-maps --presets es2015 --plugins add-module-exports,mjsx ${inPath} |`,
            `exorcist ${sourceMapPath} > ${outPath} ;`,
            `mithril-objectify ${outPath} ${outPath} ;`,
            `uglifyjs -p relative --source-map-root / --in-source-map ${sourceMapPath} --source-map ${sourceMapPath} --screw-ie8 -c -m sort -r \'require,exports\' -o ${outPath} ${outPath}`
        ].join(' ');
    }
});