2018-10-09 16:33:37 -04:00

95 lines
3.1 KiB
JavaScript

const {identity, isPlainObject, omit, castArray, isNil, isString} = require('lodash');
const AggregateError = require('aggregate-error');
const getError = require('../get-error');
const PLUGINS_DEFINITIONS = require('../definitions/plugins');
const {validatePlugin, validateStep, loadPlugin, parseConfig} = require('./utils');
const pipeline = require('./pipeline');
const normalize = require('./normalize');
module.exports = (context, pluginsPath) => {
let {options, logger} = context;
const errors = [];
const plugins = options.plugins
? castArray(options.plugins).reduce((plugins, plugin) => {
if (validatePlugin(plugin)) {
const [name, config] = parseConfig(plugin);
plugin = isString(name) ? loadPlugin(context, name, pluginsPath) : name;
if (isPlainObject(plugin)) {
Object.entries(plugin).forEach(([type, func]) => {
if (PLUGINS_DEFINITIONS[type]) {
Reflect.defineProperty(func, 'pluginName', {
value: isPlainObject(name) ? 'Inline plugin' : name,
writable: false,
enumerable: true,
});
plugins[type] = [...(PLUGINS_DEFINITIONS[type].multiple ? plugins[type] || [] : []), [func, config]];
}
});
} else {
errors.push(getError('EPLUGINSCONF', {plugin}));
}
} else {
errors.push(getError('EPLUGINSCONF', {plugin}));
}
return plugins;
}, {})
: [];
if (errors.length > 0) {
throw new AggregateError(errors);
}
options = {...plugins, ...options};
const pluginsConf = Object.entries(PLUGINS_DEFINITIONS).reduce(
(
pluginsConf,
[type, {multiple, required, default: def, pipelineConfig, postprocess = identity, preprocess = identity}]
) => {
let pluginOpts;
if (isNil(options[type]) && def) {
pluginOpts = def;
} else {
// If an object is passed and the path is missing, merge it with step options
if (isPlainObject(options[type]) && !options[type].path) {
options[type] = castArray(plugins[type]).map(
plugin => (plugin ? [plugin[0], Object.assign(plugin[1], options[type])] : plugin)
);
}
if (!validateStep({multiple, required}, options[type])) {
errors.push(getError('EPLUGINCONF', {type, multiple, required, pluginConf: options[type]}));
return pluginsConf;
}
pluginOpts = options[type];
}
const steps = castArray(pluginOpts).map(pluginOpt =>
normalize(
{...context, options: omit(options, Object.keys(PLUGINS_DEFINITIONS), 'plugins')},
type,
pluginOpt,
pluginsPath
)
);
pluginsConf[type] = async input =>
postprocess(
await pipeline(steps, pipelineConfig && pipelineConfig(pluginsConf, logger))(await preprocess(input)),
input
);
return pluginsConf;
},
plugins
);
if (errors.length > 0) {
throw new AggregateError(errors);
}
return pluginsConf;
};