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bootstrap.loader.js
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bootstrap.loader.js
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/* eslint func-names: 0 */
import semver from 'semver';
// For Node <= v0.12.x Babel polyfill is required
if (semver.lt(process.version, '4.0.0') && !global._babelPolyfill) {
try {
require('babel-polyfill');
} catch (e) {
try {
require('babel-core/polyfill');
} catch (ee) {
try {
require('babel/polyfill');
} catch (eee) {
throw new Error(`
For Node <= v0.12.x Babel polyfill is required.
Make sure it's installed in your 'node_modules/' directory.
${eee}
`);
}
}
}
}
import path from 'path';
import loaderUtils from 'loader-utils';
import resolveModule from './utils/resolveModule';
import checkBootstrapVersion from './utils/checkBootstrapVersion';
import processStyleLoaders from './utils/processStyleLoaders';
import joinLoaders from './utils/joinLoaders';
import buildExtractStylesLoader from './utils/buildExtractStylesLoader';
import createRequire from './utils/createRequire';
import logger from './utils/logger';
import { createConfig, userConfigFileExists } from './bootstrap.config';
module.exports = function() {};
/**
* Bootstrap loader entry point
*
* @param {string} source - Path to dummy file with empty object.
* Needed b/c we have to apply loader to some file.
* @returns {string}
*/
module.exports.pitch = function(source) {
if (this.cacheable) this.cacheable();
const { extractStyles, configFilePath } = loaderUtils.parseQuery(this.query);
if (configFilePath) {
const fullPathToUserConfig = path.resolve(__dirname, configFilePath);
if (!userConfigFileExists(fullPathToUserConfig)) {
throw new Error(`
Cannot find config file ${fullPathToUserConfig}. You might want to pass the full path.
`);
}
}
const config = (
createConfig({ extractStyles, configFilePath })
);
const loglevel = config.loglevel;
global.__DEBUG__ = loglevel === 'debug' || process.env.DEBUG === '*';
logger.debug(`Hey, we're in DEBUG mode! Yabba dabba doo!`);
logger.debug('Query from webpack config:', this.query || '*none*');
const bootstrapVersion = config.bootstrapVersion;
// Resolve `bootstrap` package
const bootstrapNPMModule = (
bootstrapVersion === 3 ? 'bootstrap-sass' : 'bootstrap'
);
logger.debug('Using Bootstrap module:', bootstrapNPMModule);
config.bootstrapPath = resolveModule(bootstrapNPMModule);
logger.debug(`Bootstrap module location (abs): ${config.bootstrapPath}`);
if (!config.bootstrapPath) {
throw new Error(`
Could not find bootstrap: '${bootstrapVersion}'
`);
}
config.bootstrapRelPath = path.relative(this.context, config.bootstrapPath);
logger.debug(`Bootstrap module location (rel): ${config.bootstrapRelPath}`);
logger.debug('Context:', this.context);
logger.debug('Using Bootstrap version:', bootstrapVersion);
if (!config.bootstrapPath) {
throw new Error(`
Could not find path to '${bootstrapNPMModule}' module.
Make sure it's installed in your 'node_modules/' directory.
`);
}
const bootstrapNPMVersion = (
checkBootstrapVersion(bootstrapVersion, config.bootstrapPath)
);
if (!bootstrapNPMVersion.allGood) {
throw new Error(`
Looks like you have wrong version of Bootstrap.
Loader wants: ${bootstrapVersion}.x.x
Installed version: ${bootstrapNPMVersion.version}
`);
}
logger.debug('Bootstrap NPM package version:', bootstrapNPMVersion.version);
logger.debug('Normalized params:', '\n', config);
global.__BOOTSTRAP_CONFIG__ = config;
const result = [];
const dummySourceRel = (
loaderUtils.urlToRequest(path.relative(this.context, source))
);
// Handle styles
if (config.styles) {
if (!config.styleLoaders) {
throw new Error(`
Could not find 'styleLoaders' in your config.
You can use default ones:
styleLoaders: ['style', 'css', 'sass']
`);
}
const styleLoadersWithSourceMapsAndResolveUrlLoader = (
processStyleLoaders(config.styleLoaders)
);
const styleLoaders = (
config.extractStyles ?
buildExtractStylesLoader(styleLoadersWithSourceMapsAndResolveUrlLoader) :
joinLoaders(styleLoadersWithSourceMapsAndResolveUrlLoader)
);
const bootstrapStylesLoader = (
loaderUtils.urlToRequest(
path.relative(
this.context,
require.resolve(
loaderUtils.urlToRequest('bootstrap.styles.loader.js')
)
)
) + '!'
);
const styles = styleLoaders + bootstrapStylesLoader + dummySourceRel;
result.push(createRequire(styles));
}
// Handle scripts
if (config.scripts) {
const bootstrapScriptsLoader = (
loaderUtils.urlToRequest(
path.relative(
this.context,
require.resolve(
loaderUtils.urlToRequest('bootstrap.scripts.loader.js')
)
)
) + '!'
);
const scripts = bootstrapScriptsLoader + dummySourceRel;
result.push(createRequire(scripts));
}
const resultOutput = (
result
.map(loader => loader + '\n')
.join('')
);
logger.debug('Requiring:', '\n', resultOutput);
return resultOutput;
};