diff --git a/build/logic/ReplacementMap.ts b/build/logic/ReplacementMap.ts
index e59d92e..e0a865b 100644
--- a/build/logic/ReplacementMap.ts
+++ b/build/logic/ReplacementMap.ts
@@ -22,7 +22,6 @@ export type ReplacementTarget = (
       statement: ts.Statement;
     }
 ) & {
-  optional: boolean;
   sourceFile: ts.SourceFile;
 };
 
diff --git a/build/logic/generate.ts b/build/logic/generate.ts
index fe38dc2..7213077 100644
--- a/build/logic/generate.ts
+++ b/build/logic/generate.ts
@@ -138,14 +138,8 @@ function generateStatements(
   }
 
   let lineInserted = false;
-  for (const target of replacementTargets.values()) {
-    for (const statement of target) {
-      if (statement.optional) {
-        // Since target from aliases may not be present in the original file,
-        // aliases that have not been consumed are skipped.
-        continue;
-      }
-
+  for (const [name, targets] of replacementTargets.entries()) {
+    for (const statement of targets) {
       if (!lineInserted) {
         result += "// --------------------\n";
         lineInserted = true;
diff --git a/build/logic/scanBetterFile.ts b/build/logic/scanBetterFile.ts
index 2401d39..eb63794 100644
--- a/build/logic/scanBetterFile.ts
+++ b/build/logic/scanBetterFile.ts
@@ -42,24 +42,19 @@ export function loadAliasFile(
     const name = getStatementDeclName(statement) ?? "";
     const aliases = alias.get(name);
     if (!aliases) {
+      console.warn(`Warning: No alias found for ${name}`);
       return [statement];
     }
-    return aliases.map((aliasDetails) => {
+    return aliases.flatMap((aliasDetails) => {
       if (aliasDetails.file !== targetFileName) {
-        return statement;
+        return [];
       }
-      return replaceAliases(statement, aliasDetails.replacement);
+      return [replaceAliases(statement, aliasDetails.replacement)];
     });
   });
 
   // Scan the target file
   const replacementMap = scanStatements(printer, statements, aliasFile);
-  // mark everything as optional
-  for (const targets of replacementMap.values()) {
-    for (const target of targets) {
-      target.optional = true;
-    }
-  }
 
   return {
     replacementMap,
@@ -122,7 +117,6 @@ function scanStatements(
           type: "interface",
           members,
           originalStatement: transformedStatement,
-          optional: false,
           sourceFile: sourceFile,
         });
         return targets;
@@ -146,7 +140,6 @@ function scanStatements(
                   sourceFile,
                 )
               : new Map(),
-          optional: false,
           sourceFile: sourceFile,
         });
         return targets;
@@ -156,7 +149,6 @@ function scanStatements(
         statements.push({
           type: "non-interface",
           statement: transformedStatement,
-          optional: false,
           sourceFile: sourceFile,
         });
         return statements;
diff --git a/build/util/alias.ts b/build/util/alias.ts
index 40c364d..ab48b55 100644
--- a/build/util/alias.ts
+++ b/build/util/alias.ts
@@ -19,7 +19,6 @@ const es5TypedArrays = [
   "Uint32Array",
   "Float32Array",
   "Float64Array",
-  "Float16Array",
 ];
 
 const es2020TypedBigIntArrays = ["BigInt64Array", "BigUint64Array"];