; | |
// Call this function in a another function to find out the file from | |
// which that function was called from. (Inspects the v8 stack trace) | |
// | |
// Inspired by http://stackoverflow.com/questions/13227489 | |
module.exports = function getCallerFile(position) { | |
if (position === void 0) { position = 2; } | |
if (position >= Error.stackTraceLimit) { | |
throw new TypeError('getCallerFile(position) requires position be less then Error.stackTraceLimit but position was: `' + position + '` and Error.stackTraceLimit was: `' + Error.stackTraceLimit + '`'); | |
} | |
var oldPrepareStackTrace = Error.prepareStackTrace; | |
Error.prepareStackTrace = function (_, stack) { return stack; }; | |
var stack = new Error().stack; | |
Error.prepareStackTrace = oldPrepareStackTrace; | |
if (stack !== null && typeof stack === 'object') { | |
// stack[0] holds this file | |
// stack[1] holds where this function was called | |
// stack[2] holds the file we're interested in | |
return stack[position] ? stack[position].getFileName() : undefined; | |
} | |
}; | |
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