			'use strict';
			const aliases = ['stdin', 'stdout', 'stderr'];

			const hasAlias = opts => aliases.some(alias => opts[alias] !== undefined);

			const normalizeStdio = opts => {
			if (!opts) {
			return;
			}

			const {stdio} = opts;

			if (stdio === undefined) {
			return aliases.map(alias => opts[alias]);
			}

			if (hasAlias(opts)) {
			throw new Error(`It's not possible to provide \`stdio\` in combination with one of ${aliases.map(alias => `\`${alias}\``).join(', ')}`);
			}

			if (typeof stdio === 'string') {
			return stdio;
			}

			if (!Array.isArray(stdio)) {
			throw new TypeError(`Expected \`stdio\` to be of type \`string\` or \`Array\`, got \`${typeof stdio}\``);
			}

			const length = Math.max(stdio.length, aliases.length);
			return Array.from({length}, (value, index) => stdio[index]);
			};

			module.exports = normalizeStdio;

			// `ipc` is pushed unless it is already present
			module.exports.node = opts => {
			const stdio = normalizeStdio(opts);

			if (stdio === 'ipc') {
			return 'ipc';
			}

			if (stdio === undefined \|\| typeof stdio === 'string') {
			return [stdio, stdio, stdio, 'ipc'];
			}

			if (stdio.includes('ipc')) {
			return stdio;
			}

			return [...stdio, 'ipc'];
			};

rOACCT/node_modules/execa/lib/stdio.js
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stdio.js
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