Options for assigning fields using Duration.prototype.with() or entire
objects with Duration.from(), and for arithmetic with
Duration.prototype.add() and Duration.prototype.subtract().
DOM APIs
I
I
I
I
v
I
v
I
I
v
I
I
T
T
f
DOM Events
I
I
v
I
I
v
I
I
v
I
I
I
I
I
v
I
v
I
T
v
v
v
v
f
f
f
Encoding API
I
I
v
I
I
v
I
v
I
I
v
f
f
Errors
N
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
ES Modules
I
Fetch API
I
I
unstable
I
unstable
I
unstable
I
unstable
I
v
I
I
I
v
I
v
I
v
I
I
v
I
T
T
T
T
T
T
T
T
T
T
T
f
unstable
f
unstable
FFI
c
unstable
c
unstable
c
unstable
c
unstable
I
unstable
I
unstable
I
unstable
I
unstable
I
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
v
unstable
f
unstable
File System
c
I
I
I
I
I
I
I
I
I
I
I
T
v
f
f
f
f
f
f
f
f
f
f
f
unstable
f
unstable
f
f
f
f
f
f
f
unstable
f
unstable
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
unstable
f
f
f
f
f
f
f
HTTP Server
I
I
I
I
I
I
I
I
I
I
T
T
T
f
f
I/O
c
I
I
I
I
I
I
I
I
v
v
v
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
E
Intl
N
I
unstable
I
unstable
I
unstable
T
unstable
Jupyter
N
unstable
I
unstable
T
unstable
T
unstable
T
unstable
v
unstable
f
unstable
f
unstable
f
unstable
f
unstable
f
unstable
f
unstable
KV
c
unstable
c
unstable
c
unstable
c
unstable
I
unstable
I
unstable
I
unstable
I
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
f
unstable
Network
I
I
I
I
I
unstable
I
I
I
I
unstable
I
unstable
I
I
I
I
I
I
I
I
I
I
unstable
I
I
I
unstable
I
I
I
I
T
T
T
f
f
f
f
unstable
f
f
f
f
f
Observability
I
I
I
I
v
I
v
f
f
f
Performance
I
v
I
v
I
v
I
I
v
I
T
v
Permissions
c
c
I
I
I
I
I
I
I
I
I
I
T
T
T
T
v
Runtime Environment
I
I
I
T
v
v
v
v
v
v
v
v
f
f
f
f
f
f
f
f
f
f
f
f
f
Streams API
I
v
I
v
I
I
I
I
v
I
I
v
I
I
v
I
I
I
v
I
v
I
I
I
v
I
I
I
I
v
I
v
I
I
I
I
I
I
v
I
v
I
I
I
I
v
I
T
T
Sub Process
c
c
c
I
I
I
I
I
unstable
T
f
f
unstable
Temporal
N
c
unstable
c
unstable
c
unstable
c
unstable
c
unstable
c
unstable
c
unstable
c
unstable
c
unstable
c
unstable
I
unstable
I
unstable
I
unstable
I
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
T
unstable
v
unstable
Testing
I
I
I
I
I
I
v
f
Typed Arrays
T
Web APIs
I
v
I
v
I
I
v
I
v
I
I
v
I
I
v
I
v
I
v
I
v
I
I
I
I
v
I
v
I
T
T
T
T
T
T
T
v
v
v
v
v
v
f
f
f
f
f
f
Web Crypto API
I
I
I
I
I
I
I
I
v
I
v
I
v
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
v
T
T
T
T
T
T
v
Web Sockets
I
v
I
I
I
I
v
I
I
I
I
v
unstable
I
T
f
WebAssembly
N
c
c
c
c
c
c
c
c
I
I
I
I
I
I
T
T
T
T
T
T
T
T
f
f
f
f
f
WebGPU
c
unstable
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
N
I
unstable