Clean up.

src/core/Object3D.js

@@ -279,13 +279,6 @@ Object.assign( Object3D.prototype, EventDispatcher.prototype, {
 
 		return function lookAt( vector ) {
 
-			if ( this.position.distanceToSquared( vector ) === 0 ) {
-
-				console.warn( 'THREE.Object3D.lookAt(): target vector is the same as object position.' );
-				return;
-
-			}
-
 			if ( this.isCamera ) {
 
 				m1.lookAt( this.position, vector, this.up );

src/math/Vector3.js

@@ -238,7 +238,7 @@ Object.assign( Vector3.prototype, {
 
 		return function applyEuler( euler ) {
 
-			if ( (euler && euler.isEuler) === false ) {
+			if ( ( euler && euler.isEuler ) === false ) {
 
 				console.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );
 
@@ -626,7 +626,7 @@ Object.assign( Vector3.prototype, {
 
 	},
 
-	setFromSpherical: function( s ) {
+	setFromSpherical: function ( s ) {
 
 		var sinPhiRadius = Math.sin( s.phi ) * s.radius;