diff --git a/core/01_core.js b/core/01_core.js
index 747d692414..eb57d273e7 100644
--- a/core/01_core.js
+++ b/core/01_core.js
@@ -27,7 +27,10 @@
     SymbolFor,
   } = window.__bootstrap.primordials;
   const ops = window.Deno.core.ops;
-  const opIds = Object.keys(ops).reduce((a, v, i) => ({ ...a, [v]: i }), {});
+  const opIds = Object.keys(ops).reduce((a, v, i) => {
+    a[v] = i;
+    return a;
+  }, {});
 
   // Available on start due to bindings.
   const { refOp_, unrefOp_ } = window.Deno.core;
diff --git a/ext/net/01_net.js b/ext/net/01_net.js
index 8032053194..11d6fbfacf 100644
--- a/ext/net/01_net.js
+++ b/ext/net/01_net.js
@@ -279,9 +279,7 @@
     }
 
     send(p, addr) {
-      const remote = { hostname: "127.0.0.1", ...addr };
-
-      const args = { ...remote, rid: this.rid };
+      const args = { hostname: "127.0.0.1", ...addr, rid: this.rid };
       return opSend(args, p);
     }
 
diff --git a/ext/webidl/00_webidl.js b/ext/webidl/00_webidl.js
index de3221081b..a7f0597b10 100644
--- a/ext/webidl/00_webidl.js
+++ b/ext/webidl/00_webidl.js
@@ -183,7 +183,7 @@
     const twoToOneLessThanTheBitLength = MathPow(2, bitLength - 1);
 
     return (V, opts = {}) => {
-      let x = toNumber(V, opts);
+      let x = toNumber(V);
       x = censorNegativeZero(x);
 
       if (opts.enforceRange) {
@@ -236,7 +236,7 @@
     const asBigIntN = unsigned ? BigIntAsUintN : BigIntAsIntN;
 
     return (V, opts = {}) => {
-      let x = toNumber(V, opts);
+      let x = toNumber(V);
       x = censorNegativeZero(x);
 
       if (opts.enforceRange) {
@@ -300,7 +300,7 @@
   });
 
   converters.float = (V, opts) => {
-    const x = toNumber(V, opts);
+    const x = toNumber(V);
 
     if (!NumberIsFinite(x)) {
       throw makeException(
@@ -327,8 +327,8 @@
     return y;
   };
 
-  converters["unrestricted float"] = (V, opts) => {
-    const x = toNumber(V, opts);
+  converters["unrestricted float"] = (V, _opts) => {
+    const x = toNumber(V);
 
     if (isNaN(x)) {
       return x;
@@ -342,7 +342,7 @@
   };
 
   converters.double = (V, opts) => {
-    const x = toNumber(V, opts);
+    const x = toNumber(V);
 
     if (!NumberIsFinite(x)) {
       throw makeException(
@@ -355,8 +355,8 @@
     return x;
   };
 
-  converters["unrestricted double"] = (V, opts) => {
-    const x = toNumber(V, opts);
+  converters["unrestricted double"] = (V, _opts) => {
+    const x = toNumber(V);
 
     return x;
   };
@@ -714,7 +714,7 @@
           throw makeException(
             TypeError,
             `can not be converted to '${name}' because '${key}' is required in '${name}'.`,
-            { ...opts },
+            opts,
           );
         }
       }