tape-watcher/lib/get-failure-location.js

Runs tape tests when files change and prints a pretty output

'use strict';

module.exports = function (dirname, stack) {
    if (typeof stack !== 'string') {
        return undefined;
    }

    var nonNodeModuleLines = stack.split('\n').map(function (row) {
        return row.match(/(?:\/|[a-zA-Z]:\\)[^:\s]+:(?:\d+)(?::\d+)?/);
    }).filter(function (location) {
        return location && location[0].indexOf('node_modules') === -1;
    });

    if (nonNodeModuleLines.length >= 1) {
        var location = nonNodeModuleLines[0][0];

        return location.indexOf(dirname) > -1 ? location.slice(dirname.length + 1) : location;
    }
    return undefined;
};