import { ensureLeadingSlash } from "./ensure-leading-slash";
import { isDynamicRoute } from "../router/utils";
import { NormalizeError } from "../utils";
/**
 * Takes a page and transforms it into its file counterpart ensuring that the
 * output is normalized. Note this function is not idempotent because a page
 * `/index` can be referencing `/index/index.js` and `/index/index` could be
 * referencing `/index/index/index.js`. Examples:
 *  - `/` -> `/index`
 *  - `/index/foo` -> `/index/index/foo`
 *  - `/index` -> `/index/index`
 */ export function normalizePagePath(page) {
    const normalized = /^\/index(\/|$)/.test(page) && !isDynamicRoute(page) ? "/index" + page : page === "/" ? "/index" : ensureLeadingSlash(page);
    if (process.env.NEXT_RUNTIME !== "edge") {
        const { posix  } = require("path");
        const resolvedPage = posix.normalize(normalized);
        if (resolvedPage !== normalized) {
            throw new NormalizeError("Requested and resolved page mismatch: " + normalized + " " + resolvedPage);
        }
    }
    return normalized;
}

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