importly/x/aspects/lookups/lookup-via-node-modules.js

importly generates import maps

import json5 from "json5";
import { readFile } from "fs/promises";
import { determinePackageEntry } from "../utilities/determine-package-entry.js";
export const lookupViaNodeModules = async ({ orders }) => {
    return Promise.all(orders.map(async (order) => {
        const segments = [...order.parents, order.label];
        const directory = "node_modules/" + segments.join("/node_modules/");
        const path = `${directory}/package.json`;
        try {
            const text = await readFile(path, "utf-8");
            const json = json5.parse(text);
            const entry = determinePackageEntry(json);
            return { ...order, entry };
        }
        catch (error) {
            return undefined;
            // throw new ImportlyLookupError(`error looking at: "${path}"`)
        }
    })).then(manifests => manifests.filter(m => !!m));
};
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