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| PASS autonomous: document.importNode() should import custom elements successfully |
| PASS autonomous: document.importNode() should import "undefined" custom elements successfully |
| FAIL built-in: document.importNode() should import custom elements successfully promise_test: Unhandled rejection with value: object "TypeError: The superclass is not a constructor." |
| FAIL built-in: document.importNode() should import "undefined" custom elements successfully promise_test: Unhandled rejection with value: object "TypeError: The superclass is not a constructor." |
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