From: webfansplz <308241863@qq.com>
Date: Mon, 19 Jul 2021 14:32:07 +0000 (+0800)
Subject: chore(types): improve of type assertion (#4141)
X-Git-Tag: v3.2.0-beta.2~25
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=df0ce2183627d47b25e0390e5efe3cc7b00ea1d2;p=thirdparty%2Fvuejs%2Fcore.git

chore(types): improve of type assertion (#4141)
---

diff --git a/packages/compiler-core/src/ast.ts b/packages/compiler-core/src/ast.ts
index 7bd714694d..0694b4220d 100644
--- a/packages/compiler-core/src/ast.ts
+++ b/packages/compiler-core/src/ast.ts
@@ -692,7 +692,7 @@ export function createCallExpression<T extends CallExpression['callee']>(
     loc,
     callee,
     arguments: args
-  } as any
+  } as InferCodegenNodeType<T>
 }
 
 export function createFunctionExpression(
diff --git a/packages/compiler-core/src/errors.ts b/packages/compiler-core/src/errors.ts
index 3cae36da6c..09ec729013 100644
--- a/packages/compiler-core/src/errors.ts
+++ b/packages/compiler-core/src/errors.ts
@@ -17,20 +17,24 @@ export function defaultOnWarn(msg: CompilerError) {
   __DEV__ && console.warn(`[Vue warn] ${msg.message}`)
 }
 
+type InferCompilerError<T> = T extends ErrorCodes
+  ? CoreCompilerError
+  : CompilerError
+
 export function createCompilerError<T extends number>(
   code: T,
   loc?: SourceLocation,
   messages?: { [code: number]: string },
   additionalMessage?: string
-): T extends ErrorCodes ? CoreCompilerError : CompilerError {
+): InferCompilerError<T> {
   const msg =
     __DEV__ || !__BROWSER__
       ? (messages || errorMessages)[code] + (additionalMessage || ``)
       : code
-  const error = new SyntaxError(String(msg)) as CompilerError
+  const error = new SyntaxError(String(msg)) as InferCompilerError<T>
   error.code = code
   error.loc = loc
-  return error as any
+  return error
 }
 
 export const enum ErrorCodes {