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fix(typescript-estree): correct tty check #3635

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merged 2 commits into from Aug 1, 2021
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3 changes: 2 additions & 1 deletion packages/typescript-estree/src/parser.ts
Expand Up @@ -346,7 +346,8 @@ function applyParserOptionsToExtra(options: TSESTreeOptions): void {

function warnAboutTSVersion(): void {
if (!isRunningSupportedTypeScriptVersion && !warnedAboutTSVersion) {
const isTTY = typeof process === undefined ? false : process.stdout?.isTTY;
const isTTY =
typeof process === 'undefined' ? false : process.stdout?.isTTY;
if (isTTY) {
const border = '=============';
const versionWarning = [
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