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