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Rename from iterator to iterable and split the functionality #19831

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merged 9 commits into from
Sep 22, 2020
Merged

Rename from iterator to iterable and split the functionality #19831

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ca2d02d
rename from iterator to iterable and split the functionality
todortotev Sep 14, 2020
60b8bb5
brought back the iterator variable name due to tests failing
todortotev Sep 18, 2020
2cf0346
fix the issue with failing CI
todortotev Sep 18, 2020
ce81af1
remove parentheses before data
todortotev Sep 18, 2020
2558946
move the check in the iterator case
todortotev Sep 18, 2020
c629822
check if executing the function returns an object
todortotev Sep 18, 2020
cf19623
remove symbol import
todortotev Sep 22, 2020
f7052e8
modify the check once again
todortotev Sep 22, 2020
28bb959
Added tests and fixed edge cases for DevTools iterator handling
Sep 22, 2020
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6 changes: 6 additions & 0 deletions packages/react-devtools-shared/src/utils.js
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ import {
import {localStorageGetItem, localStorageSetItem} from './storage';
import {meta} from './hydration';
import type {ComponentFilter, ElementType} from './types';
import {symbol} from 'prop-types';
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const cachedDisplayNames: WeakMap<Function, string> = new WeakMap();

Expand Down Expand Up @@ -615,6 +616,11 @@ export function formatDataForPreview(
}
case 'iterator':
const name = data.constructor.name;
// We check if the the generator returns itself.
// If it does, we want to avoid iterating over it.
if (typeof data[Symbol.iterator]() === 'object') {
return `${name}(${data.size})`;
}
if (showFormattedValue) {
// TRICKY
// Don't use [...spread] syntax for this purpose.
Expand Down