kuyin-webpack-plugins/lib/plugins/ReplaceModuleResolvePlugin.js

custom webpack, enhanced-resolve plugins

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("../utils");
function ensureExtension(path, extension) {
    if (utils_1.getExtension(path) !== '') {
        return path;
    }
    return `${path}.${extension}`;
}
function normalizeOptions({ sourceModule, destModule }) {
    const result = {
        normalSourceModule: sourceModule,
        normalDestModule: destModule,
    };
    if (typeof sourceModule === 'string') {
        result.normalSourceModule = new RegExp(sourceModule);
    }
    if (typeof destModule === 'string') {
        result.normalDestModule = request => {
            const innerRequest = request.request || request.path;
            const extension = utils_1.getExtension(innerRequest);
            const newRequest = {};
            Object.keys(request).forEach(key => {
                const val = request[key];
                if (typeof val === 'string') {
                    newRequest[key] = val.replace(ensureExtension(sourceModule, extension), ensureExtension(destModule, extension));
                }
                else {
                    newRequest[key] = val;
                }
            });
            return newRequest;
        };
    }
    return result;
}
// 构建时替换module
class ReplaceModuleResolvePlugin {
    constructor(options) {
        this.options = options;
    }
    apply(resolver) {
        const { normalSourceModule, normalDestModule } = normalizeOptions(this.options);
        resolver.getHook('existing-file').tapAsync('ReplaceModuleResolvePlugin', (request, resolveContext, callback) => {
            const innerRequest = request.request || request.path;
            // 不需要替换的场景提前返回
            if (!normalSourceModule.test(innerRequest)) {
                return callback();
            }
            const newRequest = normalDestModule(request);
            return resolver.doResolve('resolved', newRequest, 'ReplaceModuleResolvePlugin', resolveContext, callback);
        });
    }
}
exports.ReplaceModuleResolvePlugin = ReplaceModuleResolvePlugin;