Function makeChange

test/fixtures/snapshot/typescript.js:150264–150269

(changeTracker, sourceFile, assertion)

            }); },
        });
        function makeChange(changeTracker, sourceFile, assertion) {
            var replacement = ts.isAsExpression(assertion)
                ? ts.factory.createAsExpression(assertion.expression, ts.factory.createKeywordTypeNode(155 /* SyntaxKind.UnknownKeyword */))
                : ts.factory.createTypeAssertion(ts.factory.createKeywordTypeNode(155 /* SyntaxKind.UnknownKeyword */), assertion.expression);
            changeTracker.replaceNode(sourceFile, assertion.expression, replacement);
        }
        function getAssertion(sourceFile, pos) {
            if (ts.isInJSFile(sourceFile))
                return undefined;