@wagmi/cli
Version:
Manage and generate code from Ethereum ABIs
63 lines • 2.34 kB
JavaScript
import { parse } from 'dotenv';
import { expand } from 'dotenv-expand';
import { existsSync, readFileSync, statSync } from 'node:fs';
import { dirname, join } from 'node:path';
// https://github.com/vitejs/vite/blob/main/packages/vite/src/node/env.ts#L7
export function loadEnv(config = {}) {
const mode = config.mode;
if (mode === 'local') {
throw new Error(`"local" cannot be used as a mode name because it conflicts with the .local postfix for .env files.`);
}
const envFiles = [
/** default file */ '.env',
/** local file */ '.env.local',
...(mode
? [
/** mode file */ `.env.${mode}`,
/** mode local file */ `.env.${mode}.local`,
]
: []),
];
const envDir = config.envDir ?? process.cwd();
const parsed = Object.fromEntries(envFiles.flatMap((file) => {
const path = lookupFile(envDir, [file], {
pathOnly: true,
rootDir: envDir,
});
if (!path)
return [];
return Object.entries(parse(readFileSync(path)));
}));
try {
// let environment variables use each other
expand({ parsed });
}
catch (error) {
// custom error handling until https://github.com/motdotla/dotenv-expand/issues/65 is fixed upstream
// check for message "TypeError: Cannot read properties of undefined (reading 'split')"
if (error.message.includes('split')) {
throw new Error('dotenv-expand failed to expand env vars. Maybe you need to escape `$`?');
}
throw error;
}
return parsed;
}
function lookupFile(dir, formats, options) {
for (const format of formats) {
const fullPath = join(dir, format);
if (existsSync(fullPath) && statSync(fullPath).isFile()) {
const result = options?.pathOnly
? fullPath
: readFileSync(fullPath, 'utf-8');
if (!options?.predicate || options.predicate(result)) {
return result;
}
}
}
const parentDir = dirname(dir);
if (parentDir !== dir &&
(!options?.rootDir || parentDir.startsWith(options?.rootDir)))
return lookupFile(parentDir, formats, options);
return undefined;
}
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