statigen/dist/PluginManager.js

A static site generator that supports html, ejs, and markdown source files

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
class PluginManager {
    constructor(plugins = []) {
        this.plugins = [];
        this.plugins.push(...plugins);
    }
    /**
     * Call `event` on plugins
     */
    emit(eventName, data) {
        for (let plugin of this.plugins) {
            if (plugin[eventName]) {
                plugin[eventName](data);
            }
        }
    }
    /**
     * Emit an event and get the first non-undefined return value.
     * Returning a value from the handler will cancel the rest of the plugin chain.
     */
    getFirst(eventName, data) {
        for (let plugin of this.plugins) {
            if (plugin[eventName]) {
                const returnValue = plugin[eventName](data);
                if (returnValue !== undefined) {
                    return returnValue;
                }
            }
        }
    }
    /**
     * Add a plugin to the beginning of the list of plugins
     */
    addFirst(plugin) {
        if (!this.has(plugin)) {
            this.plugins.unshift(plugin);
        }
    }
    /**
     * Add a plugin to the end of the list of plugins
     */
    add(plugin) {
        if (!this.has(plugin)) {
            this.plugins.push(plugin);
        }
    }
    has(plugin) {
        return this.plugins.includes(plugin);
    }
    remove(plugin) {
        if (this.has(plugin)) {
            this.plugins.splice(this.plugins.indexOf(plugin));
        }
    }
}
exports.default = PluginManager;
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