es-dev-server/dist/middleware/plugin-serve.js

Development server for modern web apps

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createPluginServeMiddlware = void 0;
const tslib_1 = require("tslib");
const path_1 = tslib_1.__importDefault(require("path"));
/**
 * Sets up a middleware which allows plugins to serve files instead of looking it up in the file system.
 */
function createPluginServeMiddlware(cfg) {
    const servePlugins = cfg.plugins.filter(p => 'serve' in p);
    if (servePlugins.length === 0) {
        // nothing to serve
        return (ctx, next) => next();
    }
    return async function pluginServeMiddleware(context, next) {
        var _a;
        for (const plugin of servePlugins) {
            const response = await ((_a = plugin.serve) === null || _a === void 0 ? void 0 : _a.call(plugin, context));
            if (response) {
                if (response.body == null) {
                    throw new Error('A serve result must contain a body. Use the transform hook to change only the mime type.');
                }
                context.body = response.body;
                if (response.type != null) {
                    context.type = response.type;
                }
                else {
                    context.type = path_1.default.extname(path_1.default.basename(context.path));
                }
                if (response.headers) {
                    for (const [k, v] of Object.entries(response.headers)) {
                        context.response.set(k, v);
                    }
                }
                context.status = 200;
                return;
            }
        }
        return next();
    };
}
exports.createPluginServeMiddlware = createPluginServeMiddlware;
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