WIP

README.md

@@ -627,3 +627,20 @@ To actually publish a release to NPM, follow these steps:
     [releases](https://github.com/dgp1130/rules_prerender/releases) to edit the
     automatically created release to add a changelog or other relevant
     information.
+
+## Updating `tsc_wrapped` patch
+
+`@bazel/typescript` is patched to load `//packages/tsc_plugin`. The patch itself
+lives at
+[`patches/@bazel+typescript+3.0.0.patch`](patches/@bazel+typescript+3.0.0.patch)
+and is automatically applied via a `postinstall` script. If you want to change
+the patch, the easiest way to do this is by making the edits you want in
+`node_modules/@bazel/typescript/` and then running:
+
+```shell
+npx [email protected] @bazel/typescript && bazel run //path/to/pkg:target
+```
+
+This will update the `.patch` file to reflect your changes to `node_modules/`.
+`bazel` will pick up this change and rerun `npm install` followed by applying
+the patch and then building and running the desired target.

WORKSPACE.bazel

@@ -29,6 +29,7 @@ npm_install(
     package_lock_json = "//:package-lock.json",
     # Needed for `rules_postcss` to be able to resolve its NPM dependencies.
     strict_visibility = False,
+    data = ["//:patches/@bazel+typescript+3.0.0.patch"],
 )
 
 # Load bazel_skylib.

package.json

@@ -16,7 +16,8 @@
         "ibazel": "ibazel",
         "build": "bazel build //...",
         "test": "bazel test //...",
-        "release": "bazel run //:pkg.publish --config release --"
+        "release": "bazel run //:pkg.publish --config release --",
+        "postinstall": "patch-package"
     },
     "repository": {
         "type": "git",
@@ -55,11 +56,13 @@
         "@types/yargs": "^15.0.11",
         "http-status-codes": "^2.1.4",
         "jasmine": "^3.6.3",
+        "patch-package": "^6.4.7",
         "puppeteer": "^5.5.0",
         "tree-kill": "^1.2.2",
         "typescript": "^3.9.7"
     },
     "peerDependencies": {
-        "@bazel/typescript": "^3.0.0"
+        "@bazel/typescript": "^3.0.0",
+        "typescript": "^3.9.7"
     }
 }

packages/rules_prerender/prerender_component.bzl

@@ -71,6 +71,7 @@ def prerender_component(
         srcs = srcs,
         tsconfig = tsconfig,
         data = data,
+        compiler = "@npm//@bazel/typescript/internal:tsc_wrapped_with_rules_prerender_plugin",
         deps = lib_deps + ["%s_prerender" % absolute(dep) for dep in deps],
         testonly = testonly,
         visibility = visibility,

packages/tsc_plugin/BUILD.bazel

@@ -0,0 +1,18 @@
+load("@npm//@bazel/typescript:index.bzl", "ts_library")
+
+ts_library(
+    name = "tsc_plugin",
+    srcs = ["index.ts"],
+    module_name = "rules_prerender_tsc_plugin",
+    visibility = ["//visibility:public"],
+    deps = [":prerender_plugin"],
+)
+
+ts_library(
+    name = "prerender_plugin",
+    srcs = ["prerender_plugin.ts"],
+    deps = [
+        "@npm//typescript",
+        "@npm//@bazel/typescript"
+    ],
+)

packages/tsc_plugin/index.ts

@@ -0,0 +1 @@
+export { PrerenderPlugin } from './prerender_plugin';

packages/tsc_plugin/prerender_plugin.ts

@@ -0,0 +1,26 @@
+import * as ts from 'typescript';
+import { DiagnosticPlugin } from '@bazel/typescript';
+
+export class PrerenderPlugin implements DiagnosticPlugin {
+    public readonly name = 'PrerenderPlugin';
+
+    private constructor() { }
+
+    public static of(): PrerenderPlugin {
+        return new PrerenderPlugin();
+    }
+
+    public getDiagnostics(sourceFile: ts.SourceFile):
+            readonly Readonly<ts.Diagnostic>[] {
+        return [
+            {
+                messageText: 'Strict deps violation from rules_prerender!',
+                category: ts.DiagnosticCategory.Error,
+                code: 0,
+                file: sourceFile,
+                start: 0,
+                length: 5,
+            },
+        ];
+    }
+}