Polyfill for generators for ES5 with TypeScript
I'm trying to make generators and iterations working with TypeScript for ES5. I'm using the following compiler options.
"target": "es5",
"lib": [
"DOM",
"ES5",
"ScriptHost",
"es2015.iterable" // Fixes "Cannot find global type 'IterableIterator'."
],
"downlevelIteration": true // Fixes "Type 'IterableIterator<number> is not an array type or a string type."
In my test class I have:
public test = () => {
for (const i of this.generator(1)) {
console.log(i);
break;
}
}
*generator(count: number) {
while (true)
yield count++;
}
In newer browser this works but with older ones undefined is logged. The docs say
...this requires a native Symbol.iterator or Symbol.iterator shim at runtime for any non-array values.
How do I get this?
typescript generator
asked Nov 20 '18 at 14:01
user764754user764754
1,74022240
add a comment |
I'm trying to make generators and iterations working with TypeScript for ES5. I'm using the following compiler options.
"target": "es5",
"lib": [
"DOM",
"ES5",
"ScriptHost",
"es2015.iterable" // Fixes "Cannot find global type 'IterableIterator'."
],
"downlevelIteration": true // Fixes "Type 'IterableIterator<number> is not an array type or a string type."
In my test class I have:
public test = () => {
for (const i of this.generator(1)) {
console.log(i);
break;
}
}
*generator(count: number) {
while (true)
yield count++;
}
In newer browser this works but with older ones undefined is logged. The docs say
...this requires a native Symbol.iterator or Symbol.iterator shim at runtime for any non-array values.
How do I get this?
typescript generator
asked Nov 20 '18 at 14:01
user764754user764754
1,74022240
Google tells me this should contain a working shim: github.com/medikoo/es6-symbol
– Marv
Nov 20 '18 at 14:04
@Marv Seems this requires a bundler unfortunately.
– user764754
Nov 20 '18 at 14:14
You can load polyfills without bundler from polyfill.io
– Aleksey L.
Nov 20 '18 at 14:19
add a comment |
I'm trying to make generators and iterations working with TypeScript for ES5. I'm using the following compiler options.
"target": "es5",
"lib": [
"DOM",
"ES5",
"ScriptHost",
"es2015.iterable" // Fixes "Cannot find global type 'IterableIterator'."
],
"downlevelIteration": true // Fixes "Type 'IterableIterator<number> is not an array type or a string type."
In my test class I have:
public test = () => {
for (const i of this.generator(1)) {
console.log(i);
break;
}
}
*generator(count: number) {
while (true)
yield count++;
}
In newer browser this works but with older ones undefined is logged. The docs say
...this requires a native Symbol.iterator or Symbol.iterator shim at runtime for any non-array values.
How do I get this?
typescript generator
asked Nov 20 '18 at 14:01
user764754user764754
1,74022240
I'm trying to make generators and iterations working with TypeScript for ES5. I'm using the following compiler options.
"target": "es5",
"lib": [
"DOM",
"ES5",
"ScriptHost",
"es2015.iterable" // Fixes "Cannot find global type 'IterableIterator'."
],
"downlevelIteration": true // Fixes "Type 'IterableIterator<number> is not an array type or a string type."
In my test class I have:
public test = () => {
for (const i of this.generator(1)) {
console.log(i);
break;
}
}
*generator(count: number) {
while (true)
yield count++;
}
In newer browser this works but with older ones undefined is logged. The docs say
...this requires a native Symbol.iterator or Symbol.iterator shim at runtime for any non-array values.
How do I get this?
typescript generator
typescript generator
asked Nov 20 '18 at 14:01
user764754user764754
1,74022240
asked Nov 20 '18 at 14:01
user764754user764754
1,74022240
edited Nov 21 '18 at 7:59
user764754
asked Nov 20 '18 at 14:01
user764754user764754
1,74022240
asked Nov 20 '18 at 14:01
user764754user764754
1,74022240
asked Nov 20 '18 at 14:01
user764754user764754
1,74022240
1,74022240
Google tells me this should contain a working shim: github.com/medikoo/es6-symbol
– Marv
Nov 20 '18 at 14:04
@Marv Seems this requires a bundler unfortunately.
– user764754
Nov 20 '18 at 14:14
You can load polyfills without bundler from polyfill.io
– Aleksey L.
Nov 20 '18 at 14:19
add a comment |
Google tells me this should contain a working shim: github.com/medikoo/es6-symbol
– Marv
Nov 20 '18 at 14:04
@Marv Seems this requires a bundler unfortunately.
– user764754
Nov 20 '18 at 14:14
You can load polyfills without bundler from polyfill.io
– Aleksey L.
Nov 20 '18 at 14:19
Google tells me this should contain a working shim: github.com/medikoo/es6-symbol
– Marv
Nov 20 '18 at 14:04
Google tells me this should contain a working shim: github.com/medikoo/es6-symbol
– Marv
Nov 20 '18 at 14:04
@Marv Seems this requires a bundler unfortunately.
– user764754
Nov 20 '18 at 14:14
@Marv Seems this requires a bundler unfortunately.
– user764754
Nov 20 '18 at 14:14
You can load polyfills without bundler from polyfill.io
– Aleksey L.
Nov 20 '18 at 14:19
You can load polyfills without bundler from polyfill.io
– Aleksey L.
Nov 20 '18 at 14:19
add a comment |
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Google tells me this should contain a working shim: github.com/medikoo/es6-symbol
– Marv
Nov 20 '18 at 14:04
@Marv Seems this requires a bundler unfortunately.
– user764754
Nov 20 '18 at 14:14
You can load polyfills without bundler from polyfill.io
– Aleksey L.
Nov 20 '18 at 14:19