
PASS Service worker test setup 
FAIL Closing must be propagated forward: starts closed; preventClose omitted; fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose omitted; rejected close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = undefined (falsy); fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = null (falsy); fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = false (falsy); fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = 0 (falsy); fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = -0 (falsy); fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = NaN (falsy); fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose =  (falsy); fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = true (truthy) Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = a (truthy) Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = 1 (truthy) Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = Symbol() (truthy) Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = [object Object] (truthy) Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = true, preventAbort = true Can't find variable: WritableStream
FAIL Closing must be propagated forward: starts closed; preventClose = true, preventAbort = true, preventCancel = true Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed asynchronously; preventClose omitted; fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed asynchronously; preventClose omitted; rejected close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed asynchronously; preventClose = true Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed asynchronously; dest never desires chunks; preventClose omitted; fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed asynchronously; dest never desires chunks; preventClose omitted; rejected close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed asynchronously; dest never desires chunks; preventClose = true Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed after one chunk; preventClose omitted; fulfilled close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed after one chunk; preventClose omitted; rejected close promise Can't find variable: WritableStream
FAIL Closing must be propagated forward: becomes closed after one chunk; preventClose = true Can't find variable: WritableStream
FAIL Closing must be propagated forward: shutdown must not occur until the final write completes Can't find variable: WritableStream
FAIL Closing must be propagated forward: shutdown must not occur until the final write completes; preventClose = true Can't find variable: WritableStream
FAIL Closing must be propagated forward: shutdown must not occur until the final write completes; becomes closed after first write Can't find variable: WritableStream
FAIL Closing must be propagated forward: shutdown must not occur until the final write completes; becomes closed after first write; preventClose = true Can't find variable: WritableStream