version 0.8.1 doesn't compile on wasm

[StyMaar]

Unfortunately, after the 0.8.1 update the crate doesn't compile anymore in wasm (because the instant crate in fact doesn't).

Compiling instant v0.1.12
error[E0433]: failed to resolve: use of undeclared crate or module wasm_bindgen
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:172:17
|
172 | let v = js! { return Date.now(); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module wasm_bindgen
|
= note: this error originates in the attribute macro wasm_bindgen (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0433]: failed to resolve: use of undeclared crate or module wasm_bindgen
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:124:13
|
124 | let v = js! { return performance.now(); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module wasm_bindgen
|
= note: this error originates in the attribute macro wasm_bindgen (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0433]: failed to resolve: use of undeclared type WasmDescribe
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:124:13
|
124 | let v = js! { return performance.now(); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared type WasmDescribe
|
= note: this error originates in the attribute macro wasm_bindgen (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0433]: failed to resolve: use of undeclared type WasmDescribe
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:172:17
|
172 | let v = js! { return Date.now(); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared type WasmDescribe
|
= note: this error originates in the attribute macro wasm_bindgen (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function inform in this scope
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:124:13
|
124 | let v = js! { return performance.now(); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
|
= note: this error originates in the attribute macro wasm_bindgen (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find value FUNCTION in this scope
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:124:13
|
124 | let v = js! { return performance.now(); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
|
= note: this error originates in the attribute macro wasm_bindgen (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function inform in this scope
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:172:17
|
172 | let v = js! { return Date.now(); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
|
= note: this error originates in the attribute macro wasm_bindgen (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find value FUNCTION in this scope
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:172:17
|
172 | let v = js! { return Date.now(); };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
|
= note: this error originates in the attribute macro wasm_bindgen (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0599]: no method named try_into found for enum Value in the current scope
--> /home/stymaar/.cargo/registry/src/github.com-1ecc6299db9ec823/instant-0.1.12/src/wasm.rs:173:18
|
173 | return v.try_into().unwrap();
| ^^^^^^^^ method not found in Value
|
= help: items from traits can only be used if the trait is in scope
= note: 'std::convert::TryInto' is included in the prelude starting in Edition 2021
help: the following traits are implemented but not in scope; perhaps add a use for one of them:
|
1 | use crate::stdweb::unstable::TryInto;
|
1 | use std::convert::TryInto;
|

Some errors have detailed explanations: E0425, E0433, E0599.
For more information about an error, try rustc --explain E0425.

Easy step to reproduce:

wasm-pack new bug_measure_time
cd bug-measure-time/
cargo add measure_time
wasm-pack build --target web

[PSeitz]

Thanks for the easy reproduction steps. I used the stdweb feature-flag, which seems to use performance.now. It's unclear why this is not available with wasm-pack build --target web, every browser that supports wasm will have performance.now.

It works when I use the wasm-bindgen feature flag. The docs don't really say what's the difference between the two.

[PSeitz]

Can you retry with version 0.8.2?
The example compiles now.