@netlify/build/lib/core/user_node_version.js

Netlify build module

import { version as currentVersion, execPath } from 'process';
import { execa } from 'execa';
import semver from 'semver';
import { addErrorInfo } from '../error/info.js';
// Retrieve Node.js version if the Node.js path is using nvm.
// `node.exe` on Windows, `bin/node` on Unix.
const NVM_NODE_VERSION_REGEXP = /[/\\]v(\d+\.\d+\.\d+)[/\\](bin[/\\]node|node.exe)$/;
// Retrieve Node.js version from current process
const getCurrentNodeVersion = function () {
    return semver.clean(currentVersion);
};
// Retrieve Node.js version from `--node-path` or fallback to extracting the current Node.js process version
export const getUserNodeVersion = async function (nodePath) {
    // No `--node-path` CLI flag, use the current node process version
    if (nodePath === execPath) {
        return getCurrentNodeVersion();
    }
    // Extract version from path
    const result = NVM_NODE_VERSION_REGEXP.exec(nodePath);
    if (result !== null) {
        return result[1];
    }
    // Fallback to actually running `node --version` with the given nodePath
    const { stdout } = await execa(nodePath, ['--version'], { reject: false });
    const version = semver.clean(stdout);
    if (version === null) {
        const error = new Error(`Invalid --node-path CLI flag: ${nodePath}`);
        addErrorInfo(error, { type: 'resolveConfig' });
        throw error;
    }
    return version;
};