TestCafe's proxy breaks nullish coalescing. This is a basic demo using the syntax for a test case.
Created
June 15, 2022 04:42
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Test Page for of ES modules usage with nullish coalescing
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Test Page for of ES modules usage with nullish coalescing</title> | |
| </head> | |
| <body> | |
| <h1>Test Page for of ES modules usage with nullish coalescing</h1> | |
| <p>TestCafe's proxy breaks nullish coalescing. This is a basic demo using the syntax for a test case.</p> | |
| <p>The error will only show up in the console when run through TestCafe.</p> | |
| <p>Result: <span id="result">Script not completed</span></p> | |
| <script type="module"> | |
| import './index.js' | |
| </script> | |
| </body> | |
| </html> |
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| // Variables | |
| const a = undefined; | |
| const b = 'b'; | |
| const c = 0; | |
| const get = () => 1; | |
| const obj = {b: 1} | |
| // Normal nullish colascing usage | |
| const d = a ?? b; | |
| // nullish colascing with parentheses | |
| const e = (a && b) ?? c; | |
| // nullish colascing with a function | |
| const f = get() ?? c; | |
| // nullish colascing with a function and parentheses | |
| const g = (a && get()) ?? c; | |
| // nullish colascing with property syntax | |
| const h = obj['b'] ?? c; | |
| // nullish colascing with property syntax and parentheses | |
| const i = (a && obj['b']) ?? c; | |
| // nullish colascing with dynamic property syntax | |
| const j = obj[b] ?? c; | |
| // nullish colascing with dynamic property syntax and parentheses | |
| const k = {a: (b && obj[b]) ?? c}; | |
| // nullish colascing with dynamic property syntax, parentheses, and descructuring | |
| const {l} = {l: (b && obj[b]) ?? c}; | |
| // Test completed | |
| document.getElementById('result').innerHTML = 'Script completed'; | |
| export {} |
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