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'use strict';
const path = require('path');
const Promise = require('bluebird')
const fs = Promise.promisifyAll(require('fs'))
const spawn = require('cross-spawn')
const debug = require('debug')('purs-loader');
const dargs = require('./dargs');
module.exports = function bundle(options, bundleModules) {
const stdout = []
const stderr = []
const bundleCommand = options.pscBundle || 'purs';
const bundleArgs = (options.pscBundle ? [] : [ 'bundle' ]).concat(dargs(Object.assign({
_: [path.join(options.output, '*', '*.js')],
output: options.bundleOutput,
namespace: options.bundleNamespace,
}, options.pscBundleArgs)));
bundleModules.forEach(name => bundleArgs.push('--module', name))
debug('bundle: %s %O', bundleCommand, bundleArgs);
return (new Promise((resolve, reject) => {
debug('bundling PureScript...')
const compilation = spawn(bundleCommand, bundleArgs)
compilation.stdout.on('data', data => stdout.push(data.toString()))
compilation.stderr.on('data', data => stderr.push(data.toString()))
compilation.on('close', code => {
debug('finished bundling PureScript.')
if (code !== 0) {
const errorMessage = stderr.join('');
if (errorMessage.length) {
psModule.emitError(errorMessage);
}
reject(new Error('bundling failed'))
}
else {
resolve(fs.appendFileAsync(options.bundleOutput, `module.exports = ${options.bundleNamespace}`))
}
})
}))
};
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