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| (Empty) |  | 
 |   1 <!DOCTYPE html> | 
 |   2 <html> | 
 |   3 <title>Service Workers: InstallPhaseEvent</title> | 
 |   4     <head> | 
 |   5         <link rel="help" href="https://w3c.github.io/ServiceWorker/#install-phas
    e-event"> | 
 |   6         <script src="/resources/testharness.js"></script> | 
 |   7         <script src="/resources/testharnessreport.js"></script> | 
 |   8  | 
 |   9         <script src=/resources/WebIDLParser.js></script> | 
 |  10         <script src=/resources/idlharness.js></script> | 
 |  11  | 
 |  12     </head> | 
 |  13     <body> | 
 |  14  | 
 |  15 <script type=text/plain id="idl_0"> | 
 |  16 interface InstallPhaseEvent : Event { | 
 |  17   Promise<any> waitUntil(Promise<any> f); | 
 |  18 }; | 
 |  19 </pre> | 
 |  20  | 
 |  21 <!-- | 
 |  22 Service Workers have two [Lifecycle events][1], `[install][2]` and | 
 |  23 `[activate][3]`. Service Workers use the `[InstallPhaseEvent][4]` interface for | 
 |  24 `[activate][3]` event and the `[InstallEvent][5]` interface, which inherits | 
 |  25 from the `[InstallPhaseEvent][4]` interface, for `[install][2]` event. | 
 |  26  | 
 |  27 [1]: #lifecycle-events | 
 |  28 [2]: #install-event | 
 |  29 [3]: #activate-event | 
 |  30 [4]: #install-phase-event-interface | 
 |  31 [5]: #install-event-interface | 
 |  32 --> | 
 |  33  | 
 |  34  | 
 |  35     <script type=text/plain id="untested_idls"> | 
 |  36         interface Event {}; | 
 |  37     </pre> | 
 |  38  | 
 |  39     <script> | 
 |  40         var idl_array = new IdlArray(); | 
 |  41         idl_array.add_untested_idls(document.getElementById("untested_idls").tex
    tContent); | 
 |  42         idl_array.add_idls(document.getElementById("idl_0").textContent); | 
 |  43         idl_array.add_objects({ | 
 |  44             InstallPhaseEvent: ["throw new Error ('No object defined for the Ins
    tallPhaseEvent interface')"] | 
 |  45         }); | 
 |  46         idl_array.test(); | 
 |  47     </script> | 
 |  48  | 
 |  49     </body> | 
 |  50 </html> | 
 |  51  | 
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