feat(esbuild): add support for toolchains (#2704)

Add toolchain support for esbuild, removing the need for the tool attribute. Users can load the esbuild_repositories macro and call it within their WORKSPACE, this will by default define esbuild binaries for Windows, MacOS and Linux (all amd64). esbuild package now uses toolchains, and the tools attribute has been removed. By default, toolchains for Windows, Mac (amd64, arm64) and Linux (amd64, arm64) are included. See the docs for configure_esbuild_toolchain for defining custom toolchains Add the following to the `WORKSPACE` file (changing `@npm` as required), see the docs for an alternate load method ``` load("@npm//@bazel/esbuild:esbuild_repositories.bzl", "esbuild_repositories") esbuild_repositories() ```
bazel-contrib · Jun 2, 2021 · ae011bf · ae011bf
1 parent c6ae95c
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diff --git a/WORKSPACE b/WORKSPACE
@@ -122,9 +122,9 @@ browser_repositories(
 )
 
 # Setup esbuild dependencies
-load("//packages/esbuild:esbuild_repo.bzl", "esbuild_dependencies")
+load("//packages/esbuild:esbuild_repositories.bzl", "esbuild_repositories")
 
-esbuild_dependencies()
+esbuild_repositories()
 
 #
 # Dependencies to run stardoc & generating documentation

diff --git a/docs/esbuild.md b/docs/esbuild.md
@@ -22,64 +22,40 @@ or using yarn
 yarn add -D @bazel/esbuild
 ```
 
-Add an `http_archive` fetching the esbuild binary for each platform that you need to support. 
+The esbuild binary is fetched from npm automatically and exposed via toolchains. Add the `esbuild_repositories` rule to the `WORKSPACE`:
 
 ```python
-_ESBUILD_VERSION = "0.12.1"  # reminder: update SHAs below when changing this value
-http_archive(
-    name = "esbuild_darwin",
-    urls = [
-        "https://registry.npmjs.org/esbuild-darwin-64/-/esbuild-darwin-64-%s.tgz" % _ESBUILD_VERSION,
-    ],
-    strip_prefix = "package",
-    build_file_content = """exports_files(["bin/esbuild"])""",
-    sha256 = "efb34692bfa34db61139eb8e46cd6cf767a42048f41c8108267279aaf58a948f",
-)
+load("@npm//@bazel/esbuild:esbuild_repositories.bzl", "esbuild_repositories")
 
-http_archive(
-    name = "esbuild_windows",
-    urls = [
-        "https://registry.npmjs.org/esbuild-windows-64/-/esbuild-windows-64-%s.tgz" % _ESBUILD_VERSION,
-    ],
-    strip_prefix = "package",
-    build_file_content = """exports_files(["esbuild.exe"])""",
-    sha256 = "10439647b11c7fd1d9647fd98d022fe2188b4877d2d0b4acbe857f4e764b17a9",
-)
+esbuild_repositories()
+```
+
+As esbuild is being fetched from `npm`, the load statement above can cause eager fetches of the `@npm` external repository.
+To work around this, it's possible to fetch the `@bazel/esbuild` package via an `http_archive`
 
+```python
 http_archive(
-    name = "esbuild_linux",
+    name = "bazel_esbuild",
     urls = [
-        "https://registry.npmjs.org/esbuild-linux-64/-/esbuild-linux-64-%s.tgz" % _ESBUILD_VERSION,
+        "https://registry.npmjs.org/@bazel/esbuild/-/esbuild-4.0.0.tgz",
     ],
     strip_prefix = "package",
-    build_file_content = """exports_files(["bin/esbuild"])""",
-    sha256 = "de8409b90ec3c018ffd899b49ed5fc462c61b8c702ea0f9da013e0e1cd71549a",
 )
-```
 
-These can then be referenced on the `tool` attribute of the `esbuild` rule. 
+load("@bazel_esbuild//:esbuild_repositories.bzl", "esbuild_repositories")
 
-```python
-esbuild(
-    name = "bundle",
-    ...
-    tool = select({
-        "@bazel_tools//src/conditions:darwin": "@esbuild_darwin//:bin/esbuild",
-        "@bazel_tools//src/conditions:windows": "@esbuild_windows//:esbuild.exe",
-        "@bazel_tools//src/conditions:linux_x86_64": "@esbuild_linux//:bin/esbuild",
-    }),
-)
+esbuild_repositories()
 ```
 
-It might be useful to wrap this locally in a macro for better reuseability, see `packages/esbuild/test/tests.bzl` for an example.
+## Overview
 
 The `esbuild` rule can take a JS or TS dependency tree and bundle it to a single file, or split across multiple files, outputting a directory. 
 
 ```python
 load("@npm//@bazel/esbuild:index.bzl", "esbuild")
-load("@npm//@bazel/typescript:index.bzl", "ts_library")
+load("@npm//@bazel/typescript:index.bzl", "ts_project")
 
-ts_library(
+ts_project(
     name = "lib",
     srcs = ["a.ts"],
 )
@@ -97,9 +73,9 @@ To create a code split bundle, set `splitting = True` on the `esbuild` rule.
 
 ```python
 load("@npm//@bazel/esbuild:index.bzl", "esbuild")
-load("@npm//@bazel/typescript:index.bzl", "ts_library")
+load("@npm//@bazel/typescript:index.bzl", "ts_project")
 
-ts_library(
+ts_project(
     name = "lib",
     srcs = ["a.ts"],
     deps = [
@@ -125,7 +101,7 @@ This will create an output directory containing all the code split chunks, along
 <pre>
 esbuild(<a href="#esbuild-name">name</a>, <a href="#esbuild-args">args</a>, <a href="#esbuild-define">define</a>, <a href="#esbuild-deps">deps</a>, <a href="#esbuild-entry_point">entry_point</a>, <a href="#esbuild-entry_points">entry_points</a>, <a href="#esbuild-external">external</a>, <a href="#esbuild-format">format</a>, <a href="#esbuild-launcher">launcher</a>,
         <a href="#esbuild-link_workspace_root">link_workspace_root</a>, <a href="#esbuild-max_threads">max_threads</a>, <a href="#esbuild-minify">minify</a>, <a href="#esbuild-output">output</a>, <a href="#esbuild-output_css">output_css</a>, <a href="#esbuild-output_dir">output_dir</a>, <a href="#esbuild-output_map">output_map</a>,
-        <a href="#esbuild-platform">platform</a>, <a href="#esbuild-sourcemap">sourcemap</a>, <a href="#esbuild-sources_content">sources_content</a>, <a href="#esbuild-srcs">srcs</a>, <a href="#esbuild-target">target</a>, <a href="#esbuild-tool">tool</a>)
+        <a href="#esbuild-platform">platform</a>, <a href="#esbuild-sourcemap">sourcemap</a>, <a href="#esbuild-sources_content">sources_content</a>, <a href="#esbuild-srcs">srcs</a>, <a href="#esbuild-target">target</a>)
 </pre>
 
 Runs the esbuild bundler under Bazel
@@ -302,9 +278,56 @@ See https://esbuild.github.io/api/#target for more details
 
 Defaults to `"es2015"`
 
-<h4 id="esbuild-tool">tool</h4>
 
-(*<a href="https://bazel.build/docs/build-ref.html#labels">Label</a>, mandatory*): An executable for the esbuild binary
+## configure_esbuild_toolchain
+
+**USAGE**
+
+<pre>
+configure_esbuild_toolchain(<a href="#configure_esbuild_toolchain-name">name</a>, <a href="#configure_esbuild_toolchain-binary">binary</a>, <a href="#configure_esbuild_toolchain-exec_compatible_with">exec_compatible_with</a>)
+</pre>
+
+Defines a toolchain for esbuild given the binary path and platform constraints
+
+**PARAMETERS**
+
 
+<h4 id="configure_esbuild_toolchain-name">name</h4>
+
+unique name for this toolchain, generally in the form "esbuild_platform_arch"
+
+
+
+<h4 id="configure_esbuild_toolchain-binary">binary</h4>
+
+label for the esbuild binary
+
+
+
+<h4 id="configure_esbuild_toolchain-exec_compatible_with">exec_compatible_with</h4>
+
+list of platform constraints
+
+
+
+
+## esbuild_repositories
+
+**USAGE**
+
+<pre>
+esbuild_repositories(<a href="#esbuild_repositories-name">name</a>)
+</pre>
+
+Helper for fetching and setting up the esbuild versions and toolchains
+
+**PARAMETERS**
+
+
+<h4 id="esbuild_repositories-name">name</h4>
+
+currently unused
+
+Defaults to `""`
 
 
diff --git a/examples/esbuild/WORKSPACE b/examples/esbuild/WORKSPACE
@@ -25,42 +25,14 @@ http_archive(
     urls = ["https://github.com/bazelbuild/rules_nodejs/releases/download/3.5.1/rules_nodejs-3.5.1.tar.gz"],
 )
 
-_ESBUILD_VERSION = "0.12.1"
-
-http_archive(
-    name = "esbuild_darwin",
-    build_file_content = """exports_files(["bin/esbuild"])""",
-    sha256 = "efb34692bfa34db61139eb8e46cd6cf767a42048f41c8108267279aaf58a948f",
-    strip_prefix = "package",
-    urls = [
-        "https://registry.npmjs.org/esbuild-darwin-64/-/esbuild-darwin-64-%s.tgz" % _ESBUILD_VERSION,
-    ],
-)
-
-http_archive(
-    name = "esbuild_windows",
-    build_file_content = """exports_files(["esbuild.exe"])""",
-    sha256 = "10439647b11c7fd1d9647fd98d022fe2188b4877d2d0b4acbe857f4e764b17a9",
-    strip_prefix = "package",
-    urls = [
-        "https://registry.npmjs.org/esbuild-windows-64/-/esbuild-windows-64-%s.tgz" % _ESBUILD_VERSION,
-    ],
-)
-
-http_archive(
-    name = "esbuild_linux",
-    build_file_content = """exports_files(["bin/esbuild"])""",
-    sha256 = "de8409b90ec3c018ffd899b49ed5fc462c61b8c702ea0f9da013e0e1cd71549a",
-    strip_prefix = "package",
-    urls = [
-        "https://registry.npmjs.org/esbuild-linux-64/-/esbuild-linux-64-%s.tgz" % _ESBUILD_VERSION,
-    ],
-)
-
 load("@build_bazel_rules_nodejs//:index.bzl", "npm_install")
 
 npm_install(
     name = "npm",
     package_json = "//:package.json",
     package_lock_json = "//:package-lock.json",
 )
+
+load("@npm//@bazel/esbuild:esbuild_repositories.bzl", "esbuild_repositories")
+
+esbuild_repositories()
diff --git a/examples/esbuild/src/BUILD.bazel b/examples/esbuild/src/BUILD.bazel
@@ -26,11 +26,6 @@ esbuild(
     minify = True,
     # setting node as the platform will default us to CJS
     platform = "node",
-    tool = select({
-        "@bazel_tools//src/conditions:darwin": "@esbuild_darwin//:bin/esbuild",
-        "@bazel_tools//src/conditions:linux_x86_64": "@esbuild_linux//:bin/esbuild",
-        "@bazel_tools//src/conditions:windows": "@esbuild_windows//:esbuild.exe",
-    }),
     deps = [
         ":lib",
     ],

diff --git a/package.json b/package.json
@@ -124,7 +124,7 @@
         "bazel:update-deleted-packages": "sed -i.bak \"/--deleted_packages/s#=.*#=$(find {examples,e2e}/*/* \\( -name BUILD -or -name BUILD.bazel \\) | xargs -n 1 dirname | paste -sd, -)#\" .bazelrc && rm .bazelrc.bak",
         "update-codeowners": "./scripts/update_codeowners.sh",
         "update-nodejs-versions": "node ./scripts/update-nodejs-versions.js > internal/node/node_versions.bzl",
-        "update-esbuild-versions": "node ./scripts/update-esbuild-versions.js > packages/esbuild/esbuild_repo.bzl",
+        "update-esbuild-versions": "node ./scripts/update-esbuild-versions.js",
         "format": "git-clang-format",
         "format-all": "clang-format --glob='{internal/**/,examples/**/}*.{js,ts}' -i",
         "version": "conventional-changelog -p angular -i CHANGELOG.md -s && node ./scripts/on-version.js && bazel build //:release && node ./scripts/on-release.js && git stage version.bzl docs/install.md packages/create/index.js README.md CHANGELOG.md e2e/*/WORKSPACE examples/*/WORKSPACE",

diff --git a/packages/esbuild/BUILD.bazel b/packages/esbuild/BUILD.bazel
@@ -27,8 +27,11 @@ codeowners(
 
 bzl_library(
     name = "bzl",
-    srcs = glob(["**/*.bzl"]),
+    srcs = glob(["**/*.bzl"]) + [
+        "@bazel_tools//tools:bzl_srcs",
+    ],
     deps = [
+        "//packages/esbuild/toolchain:bzl",
         "@bazel_skylib//lib:paths",
         "@build_bazel_rules_nodejs//:bzl",
         "@build_bazel_rules_nodejs//internal/common:bzl",
@@ -51,20 +54,28 @@ copy_file(
     out = ":npm_version_check.js",
 )
 
-pkg_npm(
-    name = "npm_package",
+filegroup(
+    name = "srcs",
     srcs = [
         "esbuild.bzl",
+        "esbuild_packages.bzl",
+        "esbuild_repositories.bzl",
         "helpers.bzl",
         "index.bzl",
         "launcher.js",
         "package.json",
     ],
-    build_file_content = """exports_files(["launcher.js"])
-    """,
+)
+
+pkg_npm(
+    name = "npm_package",
+    srcs = [
+        ":srcs",
+        "//packages/esbuild/toolchain:srcs",
+    ],
+    build_file_content = """exports_files(["launcher.js"])""",
     substitutions = dict({
-        "@build_bazel_rules_nodejs//packages/esbuild:esbuild.bzl": "//@bazel/esbuild:esbuild.bzl",
-        "@build_bazel_rules_nodejs//packages/esbuild:launcher.js": "//@bazel/esbuild:launcher.js",
+        "@build_bazel_rules_nodejs//packages/esbuild": "//@bazel/esbuild",
     }),
     deps = [
         ":README.md",

diff --git a/packages/esbuild/esbuild.bzl b/packages/esbuild/esbuild.bzl
@@ -5,6 +5,7 @@ esbuild rule
 load("@build_bazel_rules_nodejs//:index.bzl", "nodejs_binary")
 load("@build_bazel_rules_nodejs//:providers.bzl", "ExternalNpmPackageInfo", "JSEcmaScriptModuleInfo", "JSModuleInfo", "node_modules_aspect", "run_node")
 load("@build_bazel_rules_nodejs//internal/linker:link_node_modules.bzl", "MODULE_MAPPINGS_ASPECT_RESULTS_NAME", "module_mappings_aspect")
+load("@build_bazel_rules_nodejs//packages/esbuild/toolchain:toolchain.bzl", "TOOLCHAIN")
 load(":helpers.bzl", "desugar_entry_point_names", "filter_files", "generate_path_mapping", "resolve_entry_point", "write_jsconfig_file")
 
 def _esbuild_impl(ctx):
@@ -135,7 +136,7 @@ def _esbuild_impl(ctx):
         execution_requirements = {"no-remote-exec": "1"}
 
     launcher_args = ctx.actions.args()
-    launcher_args.add("--esbuild=%s" % ctx.executable.tool.path)
+    launcher_args.add("--esbuild=%s" % ctx.toolchains[TOOLCHAIN].binary.path)
 
     run_node(
         ctx = ctx,
@@ -148,7 +149,7 @@ def _esbuild_impl(ctx):
         env = env,
         executable = "launcher",
         link_workspace_root = ctx.attr.link_workspace_root,
-        tools = [ctx.executable.tool],
+        tools = [ctx.toolchains[TOOLCHAIN].binary],
     )
 
     outputs_depset = depset(outputs)
@@ -307,15 +308,11 @@ edge16, node10, esnext). Default es2015.
 See https://esbuild.github.io/api/#target for more details
             """,
         ),
-        "tool": attr.label(
-            allow_single_file = True,
-            mandatory = True,
-            executable = True,
-            cfg = "exec",
-            doc = "An executable for the esbuild binary",
-        ),
     },
     implementation = _esbuild_impl,
+    toolchains = [
+        str(TOOLCHAIN),
+    ],
     doc = """Runs the esbuild bundler under Bazel
 
 For further information about esbuild, see https://esbuild.github.io/