Remove ConstantValue flag, comment cleanup.

src/compiler/emitter.ts

@@ -413,7 +413,7 @@ const _super = (function (geti, seti) {
          *
          * NOTE: Do not call this method directly. It is part of the emit pipeline
          * and should only be called indirectly from pipelineEmitWithSourceMap or
-         * pipelineEmitInUnspecifiedContext (when pickign a more specific context).
+         * pipelineEmitInUnspecifiedContext (when picking a more specific context).
          */
         function pipelineEmitWithSubstitution(emitContext: EmitContext, node: Node) {
             emitNodeWithSubstitution(emitContext, node, pipelineEmitForContext);
@@ -1172,7 +1172,7 @@ const _super = (function (geti, seti) {
                 const text = getLiteralTextOfNode(<LiteralExpression>expression);
                 return text.indexOf(tokenToString(SyntaxKind.DotToken)) < 0;
             }
-            else {
+            else if (isPropertyAccessExpression(expression) || isElementAccessExpression(expression)) {
                 // check if constant enum value is integer
                 const constantValue = getConstantValue(expression);
                 // isFinite handles cases when constantValue is undefined

src/compiler/factory.ts

@@ -2798,17 +2798,20 @@ namespace ts {
         return tokenSourceMapRanges && tokenSourceMapRanges[token];
     }
 
-    export function getConstantValue(node: Node) {
+    /**
+     * Gets the constant value to emit for an expression.
+     */
+    export function getConstantValue(node: PropertyAccessExpression | ElementAccessExpression) {
         const emitNode = node.emitNode;
-        if (emitNode && emitNode.flags & EmitFlags.ConstantValue) {
-            return emitNode.constantValue;
-        }
+        return emitNode && emitNode.constantValue;
     }
 
-    export function setConstantValue(node: Node, value: number) {
+    /**
+     * Sets the constant value to emit for an expression.
+     */
+    export function setConstantValue(node: PropertyAccessExpression | ElementAccessExpression, value: number) {
         const emitNode = getOrCreateEmitNode(node);
         emitNode.constantValue = value;
-        emitNode.flags |= EmitFlags.ConstantValue;
         return node;
     }
 

src/compiler/sourcemap.ts

@@ -348,7 +348,7 @@ namespace ts {
         }
 
         /**
-         * Emits a token of a node node with possible leading and trailing source maps.
+         * Emits a token of a node with possible leading and trailing source maps.
          *
          * @param node The node containing the token.
          * @param token The token to emit.

src/compiler/types.ts

@@ -3205,7 +3205,6 @@ namespace ts {
         AsyncFunctionBody = 1 << 21,
         ReuseTempVariableScope = 1 << 22,        // Reuse the existing temp variable scope during emit.
         CustomPrologue = 1 << 23,                // Treat the statement as if it were a prologue directive (NOTE: Prologue directives are *not* transformed).
-        ConstantValue = 1 << 24,                 // The node was replaced with a constant value during substitution.
     }
 
     /* @internal */