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Revert "v0.6.0" #493

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319 changes: 0 additions & 319 deletions CHANGELOG.md
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# Changelog

## 🌅 0.6.0

- ### ✨ Features

- **Add three build profiles and infrastructure for their toml config - [fitzgen], [issue/153] [issue/160] [pull/440]**

When originally conceived, `wasm-pack` was exclusively a packaging and publishing tool, which naively assumed
that the crate author would simply run `wasm-pack` when they were ready to publish a wasm package. As a result,
`wasm-pack` always ran `cargo build` in `--release` mode. Since then, `wasm-pack` has grown into an integrated build
tool used at all stages of development, from idea conception to publishing, and as such has developed new needs.

In previous releases, we've supported a flag called `--debug` which will run `cargo build` in `dev` mode, which
trades faster compilation speed for a lack of optimizations. We've renamed this flag to `--dev` to match `cargo`
and added an additional flag, representing a third, intermediary, build profile, called `--profiling` which
is useful for investigating performance issues. You can see all three flags and their uses in the table below:

| Profile | Debug Assertions | Debug Info | Optimizations | Notes |
|---------------|------------------|------------|---------------|---------------------------------------|
| `--dev` | Yes | Yes | No | Useful for development and debugging. |
| `--profiling` | No | Yes | Yes | Useful when profiling and investigating performance issues. |
| `--release` | No | No | Yes | Useful for shipping to production. |

The meaning of these flags will evolve as the platform grows, and always be tied to the behavior of these flags
in `cargo`. You can learn more about these in the [`cargo profile` documentation].

This PR also introduces a way to configure `wasm-pack` in your `Cargo.toml` file that we intend to use much more
in the future. As a largely convention-based tool, `wasm-pack` will never require that you configure it manually,
however, as our community and their projects mature alongside the tool, it became clear that allowing folks the
ability to drop down and configure things was something we needed to do to meet their needs.

Currently, you can only configure things related to the above-mentioned build profiles. To learn more,
[check out the documentation][profile-config-docs]. It leverages the `package.metadata.wasm-pack` key in your
`Carol.toml`, and looks like this:

```toml
# Cargo.toml

[package.metadata.wasm-pack.profile.dev.wasm-bindgen]
# Should we enable wasm-bindgen's debug assertions in its generated JS glue?
debug-js-glue = true
# Should wasm-bindgen demangle the symbols in the "name" custom section?
demangle-name-section = true
# Should we emit the DWARF debug info custom sections?
dwarf-debug-info = false
```

As always- there are defaults for you to use, but if you love to configure (or have a project that requires it),
get excited, as your options have grown now and will continue to!

[profile-config-docs]: https://rustwasm.github.io/wasm-pack/book/cargo-toml-configuration.html
[`cargo profile` documentation]: https://doc.rust-lang.org/cargo/reference/manifest.html#the-profile-sections
[issue/153]: https://github.com/rustwasm/wasm-pack/issues/153
[issue/160]: https://github.com/rustwasm/wasm-pack/issues/160
[pull/440]: https://github.com/rustwasm/wasm-pack/pull/440

- **DEPRECATION: Rename `--debug` to `--dev` to match `cargo` - [fitzgen], [pull/439]**

See the discussion of the build profiles feature above. This is a strict renaming of the previous `--debug` flag,
which will now warn as deprecated.

[pull/439]: https://github.com/rustwasm/wasm-pack/pull/439

- **Pre-build before wasm-pack publish - [csmoe], [issue/438] [pull/444]**

Previously, if you ran `wasm-pack publish` before you had successfully run `wasm-pack build`,
you'd receive an error that a package could not be found- because there would be no `pkg` or
out-directory containing a `package.json`.

In this situation, you would hope that `wasm-pack` would build your package for you when you
ran `wasm-pack publish`. This is slightly complicated by the fact that not everyone wants to
build their package to the default target or to a directory named `pkg`.

To solve this, running `wasm-pack publish` before a successful build will give you an interactive
prompt to build your package- allowing you to specify your out directory as well as the target you'd
like to build to. Check it out in the gif below:

![pre-build publish workflow](https://user-images.githubusercontent.com/35686186/50500909-5984fe80-0a8f-11e9-9de6-43d1423b2969.gif)

[issue/438]: https://github.com/rustwasm/wasm-pack/issues/438
[pull/444]: https://github.com/rustwasm/wasm-pack/pull/444

- **Generate self-.gitignore as part of pkg folder - [RReverser], [pull/453]**

Since `wasm-pack` was first published, the `pkg` directory was intended to be treated as a
build artifact, and as such should never be published to version control. This was
never enforced by any assets generated by `wasm-pack`, however.

Now, when building your package, `wasm-pack` will also generate a `.gitignore` file so that the
`pkg`, or out-directory, will be ignored.

If you use another version control tool, you'll need to still create or edit your own ignore file-
pull requests to support other version control tools are welcome!

If you require editing of the generated `package.json` or add additonal assets to your package
before publishing, you'll want to remove the `.gitignore` file and commit to version control. We
intend to have a solution that makes this workflow significantly easier in upcoming releases!

[RReverser]: https://github.com/RReverser
[pull/453]: https://github.com/rustwasm/wasm-pack/pull/453

- **Support cargo workspaces - [fitzgen], [issue/252] [issue/305] [pull/430]**

Workspaces are a well-liked and used feature of cargo that allow you to build multiple crates
in a single cargo project. Because of how `wasm-pack` handled paths for `target` and out-directories,
we did not support cargo workspaces out of the box. Now they should work well and the feature is
well guarded by tests!

[issue/252]: https://github.com/rustwasm/wasm-pack/issues/252
[issue/305]: https://github.com/rustwasm/wasm-pack/issues/305
[pull/430]: https://github.com/rustwasm/wasm-pack/pull/430

- **Use a global cache for all downloaded binaries - [alexcrichton], [pull/426]**

`wasm-pack` is an integrated build tool that orchestrates several other command line tools to build
your wasm project for you. How `wasm-pack` does this has evolved significantly since it's early versions.
In the last version, a `bin` directory was created to house the tool binaries that `wasm-pack` needed to
build our project, but this had several limitations. Firstly, it created a `bin` directory in your project's
root, which could be confusing. Secondly, it meant that sharing these tools across multiple projects was
not possible. We did this because it gaves us the fine-grained control over the version of these tools that
you used.

Now, `wasm-pack` will not generate a `bin` directory, but rather will use a global cache. We retain the
fine-grained control over the versions of these tools that are used, but allow multiple projects that use
the same tools at the same versions to share the already installed asset. Your global cache will generally
be in your user's home directory- we use the [`dirs` crate] to determine where to place this global cache.
This is not currently customizable but is something we intend to look into doing!

This feature ensures that `wasm-pack` users are downloading a minimal number of binaries from the network,
which, for `wasm-pack` users with multiple projects, should speed up build times.

[`dirs` crate]: https://docs.rs/dirs/1.0.4/dirs/fn.cache_dir.html
[pull/426]: https://github.com/rustwasm/wasm-pack/pull/426

- ### 🤕 Fixes

- **Fix `pack`, `login`, and `publish` for Windows users - [danwilhelm], [issue/277] [pull/489]**

Rust's behavior for spawning processes on some Windows targets introduced an interesting case where
Rust would fail unless the command was explicitly spawned with a prepended `cmd /c`. This failure
of `wasm-pack` was well noticed by our community - and thanks to the efforts of `danwilhelm` is now
fixed! You can read more on the background of this issue in [rust-lang/rust issue/44542].

[rust-lang/rust issue/44542]: https://github.com/rust-lang/rust/pull/44542
[issue/277]: https://github.com/rustwasm/wasm-pack/issues/277
[pull/489]: https://github.com/rustwasm/wasm-pack/pull/489

- **Validate `--target` argument - [csmoe], [issue/483] [pull/484]**

For a few releases now, `wasm-pack` has supported allowing users to specifying the target module system
they'd like their package built for- `browser`, `nodejs`, and `no-modules`. We did not however, validate
this input, and so if a user made even a slight mistake, e.g. `node`, `wasm-pack` would not catch the
error and would build your project using the default, `browser`. This is of course, surprising, and
unpleasant behavior and so now we'll error out with a message containing the supported target names.

[issue/483]: https://github.com/rustwasm/wasm-pack/issues/483
[pull/484]: https://github.com/rustwasm/wasm-pack/pull/484

- **Fix login - [danwilhelm], [issue/486] [pull/487]**

[danwilhelm]: https://github.com/danwilhelm
[issue/486]: https://github.com/rustwasm/wasm-pack/issues/486
[pull/487]: https://github.com/rustwasm/wasm-pack/pull/487

- **Eliminate unecessary escaping in build success terminal output - [huangjj27], [issue/390] [pull/396]**

Previously, on some systems, a successful `wasm-pack build` would print a unfortunate looking string:

```
| :-) Your wasm pkg is ready to publish at "\\\\?\\C:\\Users\\Ferris\\tmp\\wasm-bug\\pkg".
```

We've updated this to make sure the path to your project is well-formed, and most importantly,
human-readable.

[issue/390]: https://github.com/rustwasm/wasm-pack/issues/390
[pull/396]: https://github.com/rustwasm/wasm-pack/pull/396

- **Copy license file(s) to out directory - [mstallmo], [issue/407] [pull/411]**

Since `wasm-pack` was first published, we've copied over your `Cargo.toml` license definition over to
your `package.json`. However, we overlooked copying the actual `LICENSE` files over! Now we do!

[issue/407]: https://github.com/rustwasm/wasm-pack/issues/407
[pull/411]: https://github.com/rustwasm/wasm-pack/pull/411

- **Don't require cdylib crate-type for testing - [alexcrichton], [pull/442]**

`wasm-pack` was unecssarily checking `Cargo.toml` for the `cdylib` crate type during calls to `wasm-pack test`.
The `cdylib` output isn't necessary for the `wasm-pack test` stage because `wasm-bindgen` isn't being run over
a wasm file during testing. This check is now removed!

[pull/442]: https://github.com/rustwasm/wasm-pack/pull/442

- **Fix wasm-bindgen if lib is renamed via `lib.name` - [alexcrichton], [issue/339] [pull/435]**

In some circumstances, a library author may wish to specify a `name` in the `[package]` portion of their
`Cargo.toml`, as well as a different `name` in the `[lib]` portion, e.g.:

```toml
[package]
name = "hello-wasm"

[lib]
name = "wasm-lib"
```

This would cause the `wasm-bindgen` build stage of `wasm-pack` to error out because `wasm-pack` would attempt
to run `wasm-bindgen-cli` on a path using the `[package]` name, which wouldn't exist (because it would be using
the `[lib]` name). Now it works- thanks to more usage of [`cargo_metadata`] in `wasm-pack` internals!

[`cargo_metadata`]: https://crates.io/crates/cargo_metadata
[issue/339]: https://github.com/rustwasm/wasm-pack/issues/339
[pull/435]: https://github.com/rustwasm/wasm-pack/pull/435

- **Print standard error only once for failing commands - [fitzgen], [issue/422] [pull/424]**

Previously, `wasm-pack` may have printed `stderr` twice in some circumstances. This was both confusing and not
a pleasant experience, so now we've ensued that `wasm-pack` prints `stderr` exactly once! (It's hard enough to have
errors, you don't want `wasm-pack` rubbing it in, right?)

[issue/422]: https://github.com/rustwasm/wasm-pack/issues/422
[pull/424]: https://github.com/rustwasm/wasm-pack/pull/424

- **Add no-modules to --target flag's help text - [fitzgen], [issue/416] [pull/417]**

This is an interesting one! `fitzgen` very reasonably filed an issue asking to add `wasm-bindgen`'s
`--target no-modules` feature to `wasm-pack`. This was confusing as this feature was indeed already implemented,
and documented- BUT, notably missing from the `wasm-pack --help` text. We've fixed that now- and it was an omission
so glaring we definitely considered it a bug!

[issue/416]: https://github.com/rustwasm/wasm-pack/issues/416
[pull/417]: https://github.com/rustwasm/wasm-pack/pull/417

- ### 🛠️ Maintenance

- **Replace `slog` with `log` - [alexcrichton], [issue/425] [pull/434]**

For internal maintenance reasons, as well as several end-user ones, we've migrated away from the `slog` family
of crates, and are now using the `log` crate plus `env_logger`. Now, `wasm-pack` won't create a `wasm-pack.log`.
Additionally, enabling logging will now be done through `RUST_LOG=wasm_pack` instead of `-v` flags.

[issue/425]: https://github.com/rustwasm/wasm-pack/issues/425
[pull/434]: https://github.com/rustwasm/wasm-pack/pull/434

- **Move binary installation to its own crate - [drager], [issue/384] [pull/415]**

In `wasm-pack 0.5.0`, we move away from `cargo install`ing many of the tools that `wasm-pack` orchestrates. Because
we used `cargo install`, this required an end user to sit through the compilation of each tool, which was a
prohibitively long time. We moved, instead, to building, and then installing, binaries of the tools. This sped up
build times dramatically!

This pattern has been very beneficial to `wasm-pack` and is potentially something that could be beneficial to other
projects! As a result, we've refactored it out into a crate and will be considering publishing it in the near future!

[drager]: https://github.com/drager
[issue/384]: https://github.com/rustwasm/wasm-pack/issues/384
[pull/415]: https://github.com/rustwasm/wasm-pack/pull/415

- **Replace internal `Error` with `failure::Error` - [alexcrichton], [pull/436]**

The story of error message handling in `wasm-pack` has not been the prettiest. We originally were manually implementing
errors, adding the [`failure` crate] at one point, but not fully updating the entire codebase. With this PR, we are
nearly completely handling errors with `failure`, bringing the code into a much more maintainable and
pleasant-to-work-on place.

[`failure` crate]: https://crates.io/crates/failure
[pull/436]: https://github.com/rustwasm/wasm-pack/pull/436

- **Update `mdbook` version used by Travis - [fitzgen], [pull/433]**

[pull/433]: https://github.com/rustwasm/wasm-pack/pull/433

- **Read the `Cargo.toml` file only once - [fitzgen], [issue/25] [pull/431]**

This is a very fun one since it fixes one of the original issues filed by `ag_dubs` at the very beginning of `wasm-pack`
development. In a rush to implement a POC tool, `ag_dubs` noted for posterity that the `Cargo.toml` was being read
mulitple times (twice), when it did not need to be. Thanks to `fitzgen` now it's read only once! A minor performance
improvement in the scheme of things, but a nice one :)

[issue/25]: https://github.com/rustwasm/wasm-pack/issues/25
[pull/431]: https://github.com/rustwasm/wasm-pack/pull/431

- **Use `name` field for Travis CI jobs - [fitzgen], [pull/432]**

[pull/432]: https://github.com/rustwasm/wasm-pack/pull/432

- **Add a test for build command - [huangjj27], [pull/408]**

[huangjj27]: https://github.com/huangjj27
[pull/408]: https://github.com/rustwasm/wasm-pack/pull/408

- **Test paths on Windows - [xmclark], [issue/380] [pull/389]**

[xmclark]: https://github.com/xmclark
[issue/380]: https://github.com/rustwasm/wasm-pack/issues/380
[pull/389]: https://github.com/rustwasm/wasm-pack/pull/389

- **Fix typo in test function name for copying the README - [mstallmo], [pull/412]**

[pull/412]: https://github.com/rustwasm/wasm-pack/pull/412

- ### 📖 Documentation

- **Complete template deep dive docs - [danwilhem], [issue/345] [issue/346] [pull/490]**

In a rush to publish a release, `ag_dubs` left some "Coming soon!" comments on most pages
of the "Template Deep Dive" docs. These docs help walk new users through the boilerplate
that using the `wasm-pack` template generates for you. Thanks so much to `danwilhem` for
picking this up and doing an excellent job!

[issue/345]: https://github.com/rustwasm/wasm-pack/issues/345
[issue/346]: https://github.com/rustwasm/wasm-pack/issues/346
[pull/490]: https://github.com/rustwasm/wasm-pack/pull/490

- **Minor docs updates - [fitzgen], [issue/473] [pull/485]**

[issue/473]: https://github.com/rustwasm/wasm-pack/issues/473
[pull/485]: https://github.com/rustwasm/wasm-pack/pull/485

## 🌄 0.5.1

- ### 🤕 Fixes
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