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tests/cases/compiler/collisionThisExpressionAndParameter.ts(4,24): error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
tests/cases/compiler/collisionThisExpressionAndParameter.ts(9,22): error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
tests/cases/compiler/collisionThisExpressionAndParameter.ts(13,7): error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
tests/cases/compiler/collisionThisExpressionAndParameter.ts(34,17): error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
tests/cases/compiler/collisionThisExpressionAndParameter.ts(46,13): error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
tests/cases/compiler/collisionThisExpressionAndParameter.ts(59,17): error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
tests/cases/compiler/collisionThisExpressionAndParameter.ts(69,7): error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
tests/cases/compiler/collisionThisExpressionAndParameter.ts(81,13): error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
==== tests/cases/compiler/collisionThisExpressionAndParameter.ts (8 errors) ====
class Foo {
x() {
var _this = 10; // Local var. No this capture in x(), so no conflict.
function inner(_this: number) { // Error
~~~~~
!!! error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
return x => this; // New scope. So should inject new _this capture into function inner
}
}
y() {
var lamda = (_this: number) => { // Error
~~~~~
!!! error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
return x => this; // New scope. So should inject new _this capture
}
}
z(_this: number) { // Error
~~~~~
!!! error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
var lambda = () => {
return x => this; // New scope. So should inject new _this capture
}
}
x1() {
var _this = 10; // Local var. No this capture in x(), so no conflict.
function inner(_this: number) { // No Error
}
}
y1() {
var lamda = (_this: number) => { // No Error
}
}
z1(_this: number) { // No Error
var lambda = () => {
}
}
}
class Foo1 {
constructor(_this: number) { // Error
~~~~~
!!! error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
var x2 = {
doStuff: (callback) => () => {
return callback(this);
}
}
}
}
declare var console: {
log(msg: any);
}
function f1(_this: number) {
~~~~~
!!! error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
x => { console.log(this.x); };
}
declare class Foo2 {
constructor(_this: number); // no error - no code gen
z(_this: number); // no error - no code gen
}
declare function f2(_this: number); // no error
class Foo3 {
constructor(_this: string); // no code gen - no error
constructor(_this: number); // no code gen - no error
constructor(_this: any) { // Error
~~~~~
!!! error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
var x2 = {
doStuff: (callback) => () => {
return callback(this);
}
}
}
z(_this: string); // no code gen - no error
z(_this: number); // no code gen - no error
z(_this: any) { // Error
~~~~~
!!! error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
var lambda = () => {
return x => this; // New scope. So should inject new _this capture
}
}
}
declare var console: {
log(msg: any);
}
function f3(_this: number); // no code gen - no error
function f3(_this: string); // no code gen - no error
function f3(_this: any) {
~~~~~
!!! error TS2399: Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
x => { console.log(this.x); };
}
declare class Foo4 {
constructor(_this: string); // no code gen - no error
constructor(_this: number); // no code gen - no error
z(_this: string); // no code gen - no error
z(_this: number); // no code gen - no error
}
declare function f4(_this: number); // no code gen - no error
declare function f4(_this: string); // no code gen - no error
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