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test: don't clobber RegExp.$_ on startup #44864

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Oct 7, 2022
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4 changes: 3 additions & 1 deletion test/common/index.js
Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,9 @@ const isPi = (() => {
// the contents of `/sys/firmware/devicetree/base/model` but that doesn't
// work inside a container. Match the chipset model number instead.
const cpuinfo = fs.readFileSync('/proc/cpuinfo', { encoding: 'utf8' });
return /^Hardware\s*:\s*(.*)$/im.exec(cpuinfo)?.[1] === 'BCM2835';
const ok = /^Hardware\s*:\s*(.*)$/im.exec(cpuinfo)?.[1] === 'BCM2835';
/^/.test(''); // Clear RegExp.$_, some tests expect it to be empty.
return ok;
} catch {
return false;
}
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