How to specify this in an object literal with flow in js
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I am using // @flow strict but somehow it does not work properly in an object literal when using this. this seemed to be interpreted as any.
This is the example code
type TestType = {
arr: Array<number>,
fun: () => void,
}
const testObject: TestType = {
arr:,
fun(){
this.arr.toUpperCase();
}
}
testObject.fun();
How can I tell flow that it knows that this.arr.toUpperCase() is not existing, because this.arr is an Array?
javascript flowtype object-literal
asked Nov 22 '18 at 9:26
Martin MlostekMartin Mlostek
1,0881632
add a comment |
I am using // @flow strict but somehow it does not work properly in an object literal when using this. this seemed to be interpreted as any.
This is the example code
type TestType = {
arr: Array<number>,
fun: () => void,
}
const testObject: TestType = {
arr:,
fun(){
this.arr.toUpperCase();
}
}
testObject.fun();
How can I tell flow that it knows that this.arr.toUpperCase() is not existing, because this.arr is an Array?
javascript flowtype object-literal
asked Nov 22 '18 at 9:26
Martin MlostekMartin Mlostek
1,0881632
add a comment |
I am using // @flow strict but somehow it does not work properly in an object literal when using this. this seemed to be interpreted as any.
This is the example code
type TestType = {
arr: Array<number>,
fun: () => void,
}
const testObject: TestType = {
arr:,
fun(){
this.arr.toUpperCase();
}
}
testObject.fun();
How can I tell flow that it knows that this.arr.toUpperCase() is not existing, because this.arr is an Array?
javascript flowtype object-literal
asked Nov 22 '18 at 9:26
Martin MlostekMartin Mlostek
1,0881632
I am using // @flow strict but somehow it does not work properly in an object literal when using this. this seemed to be interpreted as any.
This is the example code
type TestType = {
arr: Array<number>,
fun: () => void,
}
const testObject: TestType = {
arr:,
fun(){
this.arr.toUpperCase();
}
}
testObject.fun();
How can I tell flow that it knows that this.arr.toUpperCase() is not existing, because this.arr is an Array?
javascript flowtype object-literal
javascript flowtype object-literal
asked Nov 22 '18 at 9:26
Martin MlostekMartin Mlostek
1,0881632
asked Nov 22 '18 at 9:26
Martin MlostekMartin Mlostek
1,0881632
asked Nov 22 '18 at 9:26
Martin MlostekMartin Mlostek
1,0881632
asked Nov 22 '18 at 9:26
Martin MlostekMartin Mlostek
1,0881632
asked Nov 22 '18 at 9:26
Martin MlostekMartin Mlostek
1,0881632
1,0881632
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
There seems to no way to explicitly define this type in function:
In Flow you don’t type annotate this and Flow will check whatever context you call the function with.
As a workaround you can do something like::
const testObject: TestType = {
arr:,
fun(){
const {arr}: TestType = this;
arr.toUpperCase();
}
}
testObject.fun();
answered Nov 23 '18 at 2:47
AlexAlex
3,602823
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
There seems to no way to explicitly define this type in function:
In Flow you don’t type annotate this and Flow will check whatever context you call the function with.
As a workaround you can do something like::
const testObject: TestType = {
arr:,
fun(){
const {arr}: TestType = this;
arr.toUpperCase();
}
}
testObject.fun();
answered Nov 23 '18 at 2:47
AlexAlex
3,602823
add a comment |
There seems to no way to explicitly define this type in function:
In Flow you don’t type annotate this and Flow will check whatever context you call the function with.
As a workaround you can do something like::
const testObject: TestType = {
arr:,
fun(){
const {arr}: TestType = this;
arr.toUpperCase();
}
}
testObject.fun();
answered Nov 23 '18 at 2:47
AlexAlex
3,602823
add a comment |
There seems to no way to explicitly define this type in function:
In Flow you don’t type annotate this and Flow will check whatever context you call the function with.
As a workaround you can do something like::
const testObject: TestType = {
arr:,
fun(){
const {arr}: TestType = this;
arr.toUpperCase();
}
}
testObject.fun();
answered Nov 23 '18 at 2:47
AlexAlex
3,602823
There seems to no way to explicitly define this type in function:
In Flow you don’t type annotate this and Flow will check whatever context you call the function with.
As a workaround you can do something like::
const testObject: TestType = {
arr:,
fun(){
const {arr}: TestType = this;
arr.toUpperCase();
}
}
testObject.fun();
answered Nov 23 '18 at 2:47
AlexAlex
3,602823
answered Nov 23 '18 at 2:47
AlexAlex
3,602823
answered Nov 23 '18 at 2:47
AlexAlex
3,602823
answered Nov 23 '18 at 2:47
AlexAlex
3,602823
3,602823
add a comment |
add a comment |
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