Function isContextSensitive

test/fixtures/snapshot/typescript.js:63759–63795

(node)

        // Returns true if the given expression contains (at any level of nesting) a function or arrow expression
        // that is subject to contextual typing.
        function isContextSensitive(node) {
            ts.Debug.assert(node.kind !== 169 /* SyntaxKind.MethodDeclaration */ || ts.isObjectLiteralMethod(node));
            switch (node.kind) {
                case 213 /* SyntaxKind.FunctionExpression */:
                case 214 /* SyntaxKind.ArrowFunction */:
                case 169 /* SyntaxKind.MethodDeclaration */:
                case 256 /* SyntaxKind.FunctionDeclaration */: // Function declarations can have context when annotated with a jsdoc @type
                    return isContextSensitiveFunctionLikeDeclaration(node);
                case 205 /* SyntaxKind.ObjectLiteralExpression */:
                    return ts.some(node.properties, isContextSensitive);
                case 204 /* SyntaxKind.ArrayLiteralExpression */:
                    return ts.some(node.elements, isContextSensitive);
                case 222 /* SyntaxKind.ConditionalExpression */:
                    return isContextSensitive(node.whenTrue) ||
                        isContextSensitive(node.whenFalse);
                case 221 /* SyntaxKind.BinaryExpression */:
                    return (node.operatorToken.kind === 56 /* SyntaxKind.BarBarToken */ || node.operatorToken.kind === 60 /* SyntaxKind.QuestionQuestionToken */) &&
                        (isContextSensitive(node.left) || isContextSensitive(node.right));
                case 296 /* SyntaxKind.PropertyAssignment */:
                    return isContextSensitive(node.initializer);
                case 212 /* SyntaxKind.ParenthesizedExpression */:
                    return isContextSensitive(node.expression);
                case 286 /* SyntaxKind.JsxAttributes */:
                    return ts.some(node.properties, isContextSensitive) || ts.isJsxOpeningElement(node.parent) && ts.some(node.parent.parent.children, isContextSensitive);
                case 285 /* SyntaxKind.JsxAttribute */: {
                    // If there is no initializer, JSX attribute has a boolean value of true which is not context sensitive.
                    var initializer = node.initializer;
                    return !!initializer && isContextSensitive(initializer);
                }
                case 288 /* SyntaxKind.JsxExpression */: {
                    // It is possible to that node.expression is undefined (e.g <div x={} />)
                    var expression = node.expression;
                    return !!expression && isContextSensitive(expression);
                }
            }
            return false;
        }
        function isContextSensitiveFunctionLikeDeclaration(node) {
            return (!ts.isFunctionDeclaration(node) || ts.isInJSFile(node) && !!getTypeForDeclarationFromJSDocComment(node)) &&
                (ts.hasContextSensitiveParameters(node) || hasContextSensitiveReturnExpression(node));