next/dist/shared/lib/router/utils/get-dynamic-param.js

The React Framework

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
0 && (module.exports = {
    PARAMETER_PATTERN: null,
    getDynamicParam: null,
    interpolateParallelRouteParams: null,
    parseMatchedParameter: null,
    parseParameter: null
});
function _export(target, all) {
    for(var name in all)Object.defineProperty(target, name, {
        enumerable: true,
        get: all[name]
    });
}
_export(exports, {
    PARAMETER_PATTERN: function() {
        return PARAMETER_PATTERN;
    },
    getDynamicParam: function() {
        return getDynamicParam;
    },
    interpolateParallelRouteParams: function() {
        return interpolateParallelRouteParams;
    },
    parseMatchedParameter: function() {
        return parseMatchedParameter;
    },
    parseParameter: function() {
        return parseParameter;
    }
});
const _invarianterror = require("../../invariant-error");
const _parseloadertree = require("./parse-loader-tree");
const _app = require("../routes/app");
const _resolveparamvalue = require("./resolve-param-value");
/**
 * Gets the value of a param from the params object. This correctly handles the
 * case where the param is a fallback route param and encodes the resulting
 * value.
 *
 * @param interpolatedParams - The params object.
 * @param segmentKey - The key of the segment.
 * @param fallbackRouteParams - The fallback route params.
 * @returns The value of the param.
 */ function getParamValue(interpolatedParams, segmentKey, fallbackRouteParams) {
    let value = interpolatedParams[segmentKey];
    if (fallbackRouteParams?.has(segmentKey)) {
        // We know that the fallback route params has the segment key because we
        // checked that above.
        const [searchValue] = fallbackRouteParams.get(segmentKey);
        value = searchValue;
    } else if (Array.isArray(value)) {
        value = value.map((i)=>encodeURIComponent(i));
    } else if (typeof value === 'string') {
        value = encodeURIComponent(value);
    }
    return value;
}
function interpolateParallelRouteParams(loaderTree, params, pagePath, fallbackRouteParams) {
    const interpolated = structuredClone(params);
    // Stack-based traversal with depth tracking
    const stack = [
        {
            tree: loaderTree,
            depth: 0
        }
    ];
    // Parse the route from the provided page path.
    const route = (0, _app.parseAppRoute)(pagePath, true);
    while(stack.length > 0){
        const { tree, depth } = stack.pop();
        const { segment, parallelRoutes } = (0, _parseloadertree.parseLoaderTree)(tree);
        const appSegment = (0, _app.parseAppRouteSegment)(segment);
        if (appSegment?.type === 'dynamic' && !interpolated.hasOwnProperty(appSegment.param.paramName) && // If the param is in the fallback route params, we don't need to
        // interpolate it because it's already marked as being unknown.
        !fallbackRouteParams?.has(appSegment.param.paramName)) {
            const { paramName, paramType } = appSegment.param;
            const paramValue = (0, _resolveparamvalue.resolveParamValue)(paramName, paramType, depth, route, interpolated);
            if (paramValue !== undefined) {
                interpolated[paramName] = paramValue;
            } else if (paramType !== 'optional-catchall') {
                throw Object.defineProperty(new _invarianterror.InvariantError(`Could not resolve param value for segment: ${paramName}`), "__NEXT_ERROR_CODE", {
                    value: "E932",
                    enumerable: false,
                    configurable: true
                });
            }
        }
        // Calculate next depth - increment if this is not a route group and not empty
        let nextDepth = depth;
        if (appSegment && appSegment.type !== 'route-group' && appSegment.type !== 'parallel-route') {
            nextDepth++;
        }
        // Add all parallel routes to the stack for processing
        for (const parallelRoute of Object.values(parallelRoutes)){
            stack.push({
                tree: parallelRoute,
                depth: nextDepth
            });
        }
    }
    return interpolated;
}
function getDynamicParam(interpolatedParams, segmentKey, dynamicParamType, fallbackRouteParams) {
    let value = getParamValue(interpolatedParams, segmentKey, fallbackRouteParams);
    // handle the case where an optional catchall does not have a value,
    // e.g. `/dashboard/[[...slug]]` when requesting `/dashboard`
    if (!value || value.length === 0) {
        if (dynamicParamType === 'oc') {
            return {
                param: segmentKey,
                value: null,
                type: dynamicParamType,
                treeSegment: [
                    segmentKey,
                    '',
                    dynamicParamType
                ]
            };
        }
        throw Object.defineProperty(new _invarianterror.InvariantError(`Missing value for segment key: "${segmentKey}" with dynamic param type: ${dynamicParamType}`), "__NEXT_ERROR_CODE", {
            value: "E864",
            enumerable: false,
            configurable: true
        });
    }
    return {
        param: segmentKey,
        // The value that is passed to user code.
        value,
        // The value that is rendered in the router tree.
        treeSegment: [
            segmentKey,
            Array.isArray(value) ? value.join('/') : value,
            dynamicParamType
        ],
        type: dynamicParamType
    };
}
const PARAMETER_PATTERN = /^([^[]*)\[((?:\[[^\]]*\])|[^\]]+)\](.*)$/;
function parseParameter(param) {
    const match = param.match(PARAMETER_PATTERN);
    if (!match) {
        return parseMatchedParameter(param);
    }
    return parseMatchedParameter(match[2]);
}
function parseMatchedParameter(param) {
    const optional = param.startsWith('[') && param.endsWith(']');
    if (optional) {
        param = param.slice(1, -1);
    }
    const repeat = param.startsWith('...');
    if (repeat) {
        param = param.slice(3);
    }
    return {
        key: param,
        repeat,
        optional
    };
}

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