env-cmd
Version:
Executes a command using the environment variables in an env file
58 lines (57 loc) • 2.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const fs_1 = require("fs");
const util_1 = require("util");
const path_1 = require("path");
const utils_1 = require("./utils");
const statAsync = util_1.promisify(fs_1.stat);
const readFileAsync = util_1.promisify(fs_1.readFile);
/**
* Gets the env vars from the rc file and rc environments
*/
async function getRCFileVars({ environments, filePath }) {
const absolutePath = utils_1.resolveEnvFilePath(filePath);
try {
await statAsync(absolutePath);
}
catch (e) {
const pathError = new Error(`Failed to find .rc file at path: ${absolutePath}`);
pathError.name = 'PathError';
throw pathError;
}
// Get the file extension
const ext = path_1.extname(absolutePath).toLowerCase();
let parsedData;
try {
if (ext === '.json' || ext === '.js') {
const possiblePromise = require(absolutePath); /* eslint-disable-line */
parsedData = utils_1.isPromise(possiblePromise) ? await possiblePromise : possiblePromise;
}
else {
const file = await readFileAsync(absolutePath, { encoding: 'utf8' });
parsedData = JSON.parse(file);
}
}
catch (e) {
const parseError = new Error(`Failed to parse .rc file at path: ${absolutePath}`);
parseError.name = 'ParseError';
throw parseError;
}
// Parse and merge multiple rc environments together
let result = {};
let environmentFound = false;
environments.forEach((name) => {
const envVars = parsedData[name];
if (envVars !== undefined) {
environmentFound = true;
result = Object.assign(Object.assign({}, result), envVars);
}
});
if (!environmentFound) {
const environmentError = new Error(`Failed to find environments [${environments.join(',')}] at .rc file location: ${absolutePath}`);
environmentError.name = 'EnvironmentError';
throw environmentError;
}
return result;
}
exports.getRCFileVars = getRCFileVars;