dbaas/dist/utils/getConfigFromEnv.js

Database as a service. Expose db to REST and GraphQL.

import camelcase from "camelcase";
import { set } from "lodash";
export default function getConfigFromEnv(env, prefix, omitPrefix, type = "camelcase") {
    const config = {};
    for (const [key, value] of Object.entries(env)) {
        if (key.toLowerCase().startsWith(prefix.toLowerCase()) === false)
            continue;
        if (omitPrefix) {
            let matches = false;
            if (Array.isArray(omitPrefix)) {
                matches = omitPrefix.some((prefix) => key.toLowerCase().startsWith(prefix.toLowerCase()));
            }
            else {
                matches = key.toLowerCase().startsWith(omitPrefix.toLowerCase());
            }
            if (matches)
                continue;
        }
        if (key.includes("__")) {
            const path = key
                .split("__")
                .map((key, index) => index === 0
                ? transform(transform(key.slice(prefix.length)))
                : transform(key));
            set(config, path.join("."), value);
        }
        else {
            config[transform(key.slice(prefix.length))] = value;
        }
    }
    return config;
    function transform(key) {
        if (type === "camelcase") {
            return camelcase(key);
        }
        else if (type === "underscore") {
            return key.toLowerCase();
        }
        return key;
    }
}
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