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module.exports = detect;
function detect (error, shift) {
if (!error || !error.stack) return;
if (/ at /.test(error.stack)) return v8(error, shift);
if (/:\d+:\d+$/.test(error.stack)) return safari(error, shift);
return firefox(error, shift);
}
function safari (error, shift) {
var index = 0;
if (shift) index += shift;
var fn, filename, line, col;
var lines = error.stack.split('\n');
var stack = lines[index] || lines[0];
var fields = stack.split(/\:(\d+)\:(\d+)$/);
var numbers = fields.slice(1, 3);
fields = fields[0].split('@');
return {
fn: fields[0],
filename: fields[1],
line: Number(numbers[0]),
col: Number(numbers[1])
};
}
function v8 (error, shift) {
if (!error || !error.stack) return;
var index = 1;
if (shift) index += shift;
var fn, filename, line, col;
var lines = error.stack.split('\n');
var stack = lines[index] || lines[1];
if (!stack) return;
var match = stack.match(/at ([\(\)\w\.<>\[\]\s]+) \((.+):(\d+):(\d+)/);
if (!match) {
match = stack.match(/at (.+):(\d+):(\d+)/);
if (!match) return undefined;
filename = match[1];
line = Number(match[2]);
col = Number(match[3]);
} else {
fn = match[1];
filename = match[2];
line = Number(match[3]);
col = Number(match[4]);
}
return {
fn: fn,
filename: filename,
line: line,
col: col
};
}
function firefox (error, shift) {
var index = 0;
if (shift) index += shift;
var fn, filename, line, col;
var lines = error.stack.split('\n');
var stack = lines[index] || lines[0];
var fields = stack.split(/\:(\d+)$/);
var numbers = fields.slice(1, 2);
fields = fields[0].split('@');
if (index == 0) {
col = error.columnNumber;
}
return {
fn: fields[0],
filename: fields[1],
line: Number(numbers[0]),
col: col
};
}
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