'use strict';
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const mocha = require('mocha');
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const internal = [
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'(timers.js:',
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'(node.js:',
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'(module.js:',
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'(domain.js:',
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'GeneratorFunctionPrototype.next (native)',
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'at Generator.next',
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/at process\._tickDomainCallback \(.*\)/,
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/at emitCloseNT \(net\.js.*\)/,
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/at _combinedTickCallback \(internal.*\)/,
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// node 8.x
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'at Promise (<anonymous>)',
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'at next (native)',
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'__mocha_internal__',
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/node_modules\/.*empower-core\//,
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/node_modules\/.*mocha\//,
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/node_modules\/.*co\//,
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/node_modules\/.*co-mocha\//,
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/node_modules\/.*supertest\//,
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];
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// monkey-patch `Runner#fail` to modify stack
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const originFn = mocha.Runner.prototype.fail;
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mocha.Runner.prototype.fail = function(test, err) {
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/* istanbul ignore else */
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if (err.stack) {
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const stack = err.stack.split('\n').filter(line => {
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line = line.replace(/\\\\?/g, '/');
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return !internal.some(rule => match(line, rule));
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});
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stack.push(' [use `--full-trace` to display the full stack trace]');
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err.stack = stack.join('\n');
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}
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return originFn.call(this, test, err);
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};
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function match(line, rule) {
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if (rule instanceof RegExp) return rule.test(line);
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return line.includes(rule);
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}
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