next-compose-middleware/dist/compose.js

`next-compose-middleware` is a library that simplifies building complex, declarative middleware for Next.js applications. It allows you to create highly readable and maintainable middleware by composing multiple functions together.

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __rest = (this && this.__rest) || function (s, e) {
    var t = {};
    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
        t[p] = s[p];
    if (s != null && typeof Object.getOwnPropertySymbols === "function")
        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
                t[p[i]] = s[p[i]];
        }
    return t;
};
import { findPathValue, getDividedPaths, toPath } from './path';
import { pipe } from './pipe';
import { createStore } from './store';
export const composeMain = (req, res, option, store) => __awaiter(void 0, void 0, void 0, function* () {
    const { scripts } = option, pathMap = __rest(option, ["scripts"]);
    const result = yield pipe(req, res, scripts, store);
    const { brokenAll, path } = store.getState();
    if (brokenAll) {
        return result;
    }
    const [nextPath, ...restPath] = path;
    if (nextPath === undefined) {
        return result;
    }
    const nextValue = findPathValue(pathMap, toPath(nextPath));
    if (nextValue === null) {
        return result;
    }
    const isMiddlewareArray = 'length' in nextValue;
    if (isMiddlewareArray) {
        return pipe(req, res, nextValue, store);
    }
    store.dispatch({ type: 'setPath', payload: restPath });
    return composeMain(req, result, nextValue, store);
});
export const compose = (req, res, option, store) => __awaiter(void 0, void 0, void 0, function* () {
    store.dispatch({
        type: 'setPath',
        payload: getDividedPaths(req.nextUrl.pathname),
    });
    return composeMain(req, res, option, store);
});
export const composeMiddleware = (req, res, option) => {
    const store = createStore();
    return compose(req, res, option, store);
};
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