chore: pin @types/prettier on JsiiProject (#1855)

Addresses the issue described in aws/aws-cdk#20319 --- By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
projen · May 16, 2022 · 0eae60e · 0eae60e
1 parent dd6c68e
commit 0eae60e
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Showing 4 changed files with 19 additions and 1 deletion.
diff --git a/package.json b/package.json
diff --git a/src/cdk/jsii-project.ts b/src/cdk/jsii-project.ts
@@ -339,6 +339,15 @@ export class JsiiProject extends TypeScriptProject {
     if (this.npmignore) {
       this.npmignore.readonly = false;
     }
+
+    // jsii relies on typescript < 4.0, which causes build errors
+    // since @types/[email protected] only supports typescript >= 4.2.
+    // add a yarn resolution to fix this. this should have no effect if
+    // @types/prettier is not a transitive dependency or if a package manager
+    // besides yarn is being used
+    this.package.addField("resolutions", {
+      "@types/prettier": "2.6.0",
+    });
   }
 
   /**

diff --git a/test/__snapshots__/integ.test.ts.snap b/test/__snapshots__/integ.test.ts.snap
diff --git a/yarn.lock b/yarn.lock