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util-inspect-error-cause.js
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util-inspect-error-cause.js
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'use strict';
require('../common');
const { inspect } = require('util');
class FoobarError extends Error {
status = 'Feeling good';
}
const cause1 = new TypeError('Inner error');
const cause2 = new FoobarError('Individual message', { cause: cause1 });
cause2.extraProperties = 'Yes!';
const cause3 = new Error('Stack causes', { cause: cause2 });
const cause4 = new Error('Number error cause', { cause: 42 });
const cause5 = new Error('Object cause', {
cause: {
message: 'Unique',
name: 'Error',
stack: 'Error: Unique\n' +
' at Module._compile (node:internal/modules/cjs/loader:827:30)',
},
});
const cause6 = new Error('undefined cause', {
cause: undefined,
});
console.log(cause4);
console.log(cause5);
console.log(cause6);
process.nextTick(() => {
const error = new RangeError('New Stack Frames', { cause: cause2 });
const error2 = new RangeError('New Stack Frames', { cause: cause3 });
inspect.defaultOptions.colors = true;
console.log(inspect(error));
console.log(inspect(cause3));
console.log(inspect(error2));
inspect.defaultOptions.colors = false;
console.log(inspect(error));
console.log(inspect(cause3));
console.log(inspect(error2));
});
{
const error = new Error('cause that throws');
Reflect.defineProperty(error, 'cause', { get() { throw new Error(); } });
console.log(inspect(error));
}