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92 lines
2.5 KiB
92 lines
2.5 KiB
4 months ago
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const ChainedMap = require('./ChainedMap');
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const Orderable = require('./Orderable');
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module.exports = Orderable(
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class extends ChainedMap {
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constructor(parent, name, type = 'plugin') {
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super(parent);
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this.name = name;
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this.type = type;
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this.extend(['init']);
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this.init((Plugin, args = []) => {
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if (typeof Plugin === 'function') {
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return new Plugin(...args);
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}
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return Plugin;
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});
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}
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use(plugin, args = []) {
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return this.set('plugin', plugin).set('args', args);
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}
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tap(f) {
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if (!this.has('plugin')) {
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throw new Error(
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`Cannot call .tap() on a plugin that has not yet been defined. Call ${this.type}('${this.name}').use(<Plugin>) first.`,
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);
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}
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this.set('args', f(this.get('args') || []));
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return this;
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}
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set(key, value) {
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if (key === 'args' && !Array.isArray(value)) {
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throw new Error('args must be an array of arguments');
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}
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return super.set(key, value);
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}
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merge(obj, omit = []) {
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if ('plugin' in obj) {
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this.set('plugin', obj.plugin);
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}
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if ('args' in obj) {
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this.set('args', obj.args);
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}
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return super.merge(obj, [...omit, 'args', 'plugin']);
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}
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toConfig() {
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const init = this.get('init');
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let plugin = this.get('plugin');
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const args = this.get('args');
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let pluginPath = null;
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if (plugin === undefined) {
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throw new Error(
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`Invalid ${this.type} configuration: ${this.type}('${this.name}').use(<Plugin>) was not called to specify the plugin`,
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);
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}
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// Support using the path to a plugin rather than the plugin itself,
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// allowing expensive require()s to be skipped in cases where the plugin
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// or webpack configuration won't end up being used.
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if (typeof plugin === 'string') {
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pluginPath = plugin;
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// eslint-disable-next-line global-require, import/no-dynamic-require
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plugin = require(pluginPath);
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}
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const constructorName = plugin.__expression
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? `(${plugin.__expression})`
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: plugin.name;
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const config = init(plugin, args);
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Object.defineProperties(config, {
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__pluginName: { value: this.name },
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__pluginType: { value: this.type },
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__pluginArgs: { value: args },
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__pluginConstructorName: { value: constructorName },
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__pluginPath: { value: pluginPath },
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});
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return config;
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}
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},
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);
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