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fix(tsc-wrapped): collect new expressions with no arguments (#15908) 

Fixes #15906
This commit is contained in:
Chuck Jazdzewski 2017-04-13 11:53:26 -07:00 committed by Tobias Bosch
parent d263595c63
commit 70b1d6dd9d
2 changed files with 29 additions and 6 deletions
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22
tools/@angular/tsc-wrapped/src/evaluator.ts
View File

@ -154,7 +154,8 @@ export class Evaluator {
case ts.SyntaxKind.CallExpression:
const callExpression = <ts.CallExpression>node;
// We can fold a <array>.concat(<v>).
if (isMethodCallOf(callExpression, 'concat') && callExpression.arguments.length === 1) {
if (isMethodCallOf(callExpression, 'concat') &&
arrayOrEmpty(callExpression.arguments).length === 1) {
const arrayNode = (<ts.PropertyAccessExpression>callExpression.expression).expression;
if (this.isFoldableWorker(arrayNode, folding) &&
this.isFoldableWorker(callExpression.arguments[0], folding)) {
@ -167,7 +168,8 @@ export class Evaluator {
}
// We can fold a call to CONST_EXPR
if (isCallOf(callExpression, 'CONST_EXPR') && callExpression.arguments.length === 1)
if (isCallOf(callExpression, 'CONST_EXPR') &&
arrayOrEmpty(callExpression.arguments).length === 1)
return this.isFoldableWorker(callExpression.arguments[0], folding);
return false;
case ts.SyntaxKind.NoSubstitutionTemplateLiteral:
@ -295,14 +297,15 @@ export class Evaluator {
return recordEntry({__symbolic: 'spread', expression: spreadExpression}, node);
case ts.SyntaxKind.CallExpression:
const callExpression = <ts.CallExpression>node;
if (isCallOf(callExpression, 'forwardRef') && callExpression.arguments.length === 1) {
if (isCallOf(callExpression, 'forwardRef') &&
arrayOrEmpty(callExpression.arguments).length === 1) {
const firstArgument = callExpression.arguments[0];
if (firstArgument.kind == ts.SyntaxKind.ArrowFunction) {
const arrowFunction = <ts.ArrowFunction>firstArgument;
return recordEntry(this.evaluateNode(arrowFunction.body), node);
}
}
const args = callExpression.arguments.map(arg => this.evaluateNode(arg));
const args = arrayOrEmpty(callExpression.arguments).map(arg => this.evaluateNode(arg));
if (!this.options.verboseInvalidExpression && args.some(isMetadataError)) {
return args.find(isMetadataError);
}
@ -315,7 +318,8 @@ export class Evaluator {
}
}
// Always fold a CONST_EXPR even if the argument is not foldable.
if (isCallOf(callExpression, 'CONST_EXPR') && callExpression.arguments.length === 1) {
if (isCallOf(callExpression, 'CONST_EXPR') &&
arrayOrEmpty(callExpression.arguments).length === 1) {
return recordEntry(args[0], node);
}
const expression = this.evaluateNode(callExpression.expression);
@ -329,7 +333,7 @@ export class Evaluator {
return recordEntry(result, node);
case ts.SyntaxKind.NewExpression:
const newExpression = <ts.NewExpression>node;
const newArgs = newExpression.arguments.map(arg => this.evaluateNode(arg));
const newArgs = arrayOrEmpty(newExpression.arguments).map(arg => this.evaluateNode(arg));
if (!this.options.verboseInvalidExpression && newArgs.some(isMetadataError)) {
return recordEntry(newArgs.find(isMetadataError), node);
}
@ -575,3 +579,9 @@ export class Evaluator {
function isPropertyAssignment(node: ts.Node): node is ts.PropertyAssignment {
return node.kind == ts.SyntaxKind.PropertyAssignment;
}
const empty = [] as ts.NodeArray<any>;
function arrayOrEmpty<T extends ts.Node>(v: ts.NodeArray<T>): ts.NodeArray<T> {
return v || empty;
}

13
tools/@angular/tsc-wrapped/test/evaluator.spec.ts
View File

@ -215,8 +215,21 @@ describe('Evaluator', () => {
0, {__symbolic: 'spread', expression: {__symbolic: 'reference', name: 'arrImport'}}, 5
]);
});
it('should be able to handle a new expression with no arguments', () => {
const source = sourceFileOf(`
export var a = new f;
`);
const expr = findVar(source, 'a');
expect(evaluator.evaluateNode(expr.initializer))
.toEqual({__symbolic: 'new', expression: {__symbolic: 'reference', name: 'f'}});
});
});
function sourceFileOf(text: string): ts.SourceFile {
return ts.createSourceFile('test.ts', text, ts.ScriptTarget.Latest, true);
}
const FILES: Directory = {
'directives.ts': `
export function Pipe(options: { name?: string, pure?: boolean}) {