@cloud-copilot/iam-data
Version:
73 lines • 2.61 kB
JavaScript
// @ts-ignore
const root = import.meta.url;
// @ts-ignore
const environmentRoot = import.meta.env?.IAM_DATA_ROOT;
let resolvedRoot = undefined;
let useFetch = false;
const fileSystem = root.startsWith('file://');
/**
* Get a data file from the data directory in ESM
*
* @param file the path to the file to retrieve data for.
* @returns the data from the file
*/
export async function readRelativeFile(pathParts) {
/*
* Maybe a little too optimized here. Want to only resolve the root once, but we have to do it inside the
* function, so caching it here.
*/
if (!resolvedRoot) {
if (fileSystem) {
if (environmentRoot && environmentRoot !== '') {
if (environmentRoot.startsWith('file://')) {
resolvedRoot = new URL(environmentRoot).href;
}
else {
const { resolve: pathResolve } = await import('node:path');
const { pathToFileURL } = await import('node:url');
resolvedRoot = pathToFileURL(pathResolve(environmentRoot)).href;
}
}
else {
resolvedRoot = new URL('../../', root).href;
}
}
else {
if (environmentRoot && environmentRoot !== '') {
useFetch = true;
resolvedRoot = environmentRoot;
if (!resolvedRoot.endsWith('/')) {
resolvedRoot = resolvedRoot + '/';
}
}
else {
resolvedRoot = '../../';
}
}
if (!resolvedRoot.endsWith('/')) {
resolvedRoot = resolvedRoot + '/';
}
}
if (fileSystem) {
const { readFile } = await import('fs/promises');
const { join } = await import('node:path');
const { fileURLToPath } = await import('node:url');
const relativePath = join(...pathParts);
const fileUrl = new URL(relativePath, resolvedRoot);
const contents = await readFile(fileURLToPath(fileUrl), 'utf-8');
return JSON.parse(contents);
}
else if (useFetch) {
const dataUrl = resolvedRoot + pathParts.join('/');
const response = await fetch(dataUrl);
if (!response.ok) {
throw new Error(`Failed to fetch JSON data from ${dataUrl}`);
}
return await response.json();
}
else {
const contents = await import(resolvedRoot + pathParts.join('/'));
return await contents.default;
}
}
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