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'use strict';
const Promise = require('bluebird');
const spawn = require('cross-spawn');
const debug_ = require('debug');
const debug = debug_('purs-loader');
const debugVerbose = debug_('purs-loader:verbose');
const dargs = require('./dargs');
module.exports = function compile(psModule) {
const options = psModule.options
const compileCommand = options.psc || 'purs';
const compileArgs = (options.psc ? [] : [ 'compile' ]).concat(dargs(Object.assign({
_: options.src,
output: options.output,
}, options.pscArgs)))
const stderr = [];
debug('compile %s %O', compileCommand, compileArgs)
return new Promise((resolve, reject) => {
debug('compiling PureScript...')
const compilation = spawn(compileCommand, compileArgs)
compilation.stderr.on('data', data => {
stderr.push(data.toString());
});
compilation.stdout.on('data', data => {
debugVerbose(data.toString());
});
compilation.on('close', code => {
debug('finished compiling PureScript.')
if (code !== 0) {
const errorMessage = stderr.join('');
if (errorMessage.length) {
psModule.emitError(errorMessage);
}
if (options.watch) {
resolve(psModule);
}
else {
reject(new Error('compilation failed'))
}
} else {
const warningMessage = stderr.join('');
if (options.warnings && warningMessage.length) {
psModule.emitWarning(warningMessage);
}
resolve(psModule)
}
})
});
};
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