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Showing content from https://github.com/power-assert-js/power-assert/issues/43 below:

power-assert make `assert()` of assert module silent · Issue #43 · power-assert-js/power-assert · GitHub

I've created reproduce repository.

• https://github.com/azu/issue-power-assert-with-assert

Application code use assert module of Node Core.

index.js

// application code use `assert` module
const assert = require("assert");
export function hello(name) {
    assert(typeof name === "string");
    return "Hello " + name;
}

Test code:

const assert = require("power-assert");
import {hello} from "../src/index";
describe("hello", function () {
    it("should accept string", function () {
        hello(42);  // Should throw error via assert and fail tests.
    });
});

These code are transformed by babel + babel-plugin-espower.

.babelrc

{
  "presets": [
    "es2015"
  ],
  "env": {
    "development": {
      "plugins": [
        "babel-plugin-espower"
      ]
    }
  }
}

When I do this:

Fail test

Pass test :(

Application code is transformed to

"use strict";

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };

var _powerAssertRecorder = function () { function PowerAssertRecorder() { this.captured = []; } PowerAssertRecorder.prototype._capt = function _capt(value, espath) { this.captured.push({ value: value, espath: espath }); return value; }; PowerAssertRecorder.prototype._expr = function _expr(value, source) { return { powerAssertContext: { value: value, events: this.captured }, source: source }; }; return PowerAssertRecorder; }();

exports.hello = hello;
// application code use `assert` module
var assert = require("assert");
function hello(name) {
    var _rec = new _powerAssertRecorder();

    assert(_rec._expr(_rec._capt(_rec._capt(typeof name === "undefined" ? "undefined" : _typeof(name), "arguments/0/left") === "string", "arguments/0"), {
        content: "assert(typeof name === \"string\")",
        filepath: "src/index.js",
        line: 4
    }));
    return "Hello " + name;
}
//# sourceMappingURL=index.js.map

_rec._expr return object.

    var assert = require("assert");
    var object = _rec._expr(_rec._capt(_rec._capt(typeof name === "undefined" ? "undefined" : _typeof(name), "arguments/0/left") === "string", "arguments/0"), {
        content: "assert(typeof name === \"string\")",
        filepath: "src/index.js",
        line: 4
    });
    assert(object);

So, assert(Object) never throw error. It causes this issue.

Do you have any solution?

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