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Bind comma expression LHS call expressions

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This commit is contained in:
Wesley Wigham
2020-10-28 13:48:29 -07:00
parent ca8a15d37b
commit 4ec02a56b8
5 changed files with 90 additions and 3 deletions
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13
src/compiler/binder.ts
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@@ -1337,10 +1337,14 @@ namespace ts {
function bindExpressionStatement(node: ExpressionStatement): void {
bind(node.expression);
// A top level call expression with a dotted function name and at least one argument
maybeBindExpressionFlowIfCall(node.expression);
}
function maybeBindExpressionFlowIfCall(node: Expression) {
// A top level or LHS of comma expression call expression with a dotted function name and at least one argument
// is potentially an assertion and is therefore included in the control flow.
if (node.expression.kind === SyntaxKind.CallExpression) {
const call = <CallExpression>node.expression;
if (node.kind === SyntaxKind.CallExpression) {
const call = <CallExpression>node;
if (isDottedName(call.expression) && call.expression.kind !== SyntaxKind.SuperKeyword) {
currentFlow = createFlowCall(currentFlow, call);
}
@@ -1511,6 +1515,9 @@ namespace ts {
break;
}
case BindBinaryExpressionFlowState.BindToken: {
if (node.operatorToken.kind === SyntaxKind.CommaToken) {
maybeBindExpressionFlowIfCall(node.left);
}
advanceState(BindBinaryExpressionFlowState.BindRight);
maybeBind(node.operatorToken);
break;