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lib: fixing isStackOverflowError to account for different JS engines #19705

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mike-kaufman wants to merge 3 commits into from
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lib: fixing isStackOverflowError to account for different JS engines #19705

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01b9afb
lib: fixing isStackOverflowError to account for different JS engines
Mar 30, 2018
2b4118c
fixup! lib: fixing isStackOverflowError to account for different JS e…
TimothyGu Mar 30, 2018
d6267a8
responding to PR feedback
Mar 30, 2018
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14 changes: 9 additions & 5 deletions lib/internal/errors.js
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Original file line number Diff line number Diff line change
Expand Up @@ -572,25 +572,29 @@ function dnsException(err, syscall, hostname) {
return ex;
}

let MAX_STACK_MESSAGE;
let maxStack_ErrorName;
let maxStack_ErrorMessage;
/**
* Returns true if `err` is a `RangeError` with an engine-specific message.
* Returns true if `err.name` and `err.message` are equal to engine-specific
* values indicating max call stack size has been exceeded.
* "Maximum call stack size exceeded" in V8.
*
* @param {Error} err
* @returns {boolean}
*/
function isStackOverflowError(err) {
if (MAX_STACK_MESSAGE === undefined) {
if (maxStack_ErrorMessage === undefined) {
try {
function overflowStack() { overflowStack(); }
overflowStack();
} catch (err) {
MAX_STACK_MESSAGE = err.message;
maxStack_ErrorMessage = err.message;
maxStack_ErrorName = err.name;
}
}

return err.name === 'RangeError' && err.message === MAX_STACK_MESSAGE;
return err.name === maxStack_ErrorName &&
err.message === maxStack_ErrorMessage;
}

module.exports = exports = {
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