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[Async] Enable async/await and update UIExplorer and tests

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Summary:
- Enables async/await in .babelrc and transformer.js
- Adds regenerator to package.json. Users still need to explicitly require the regenerator runtime -- this is so that you only pay for what you use.
- Update AsyncStorage examples in UIExplorer to use async/await
- Update promise tests in UIExplorer to use async/await in addition to the promise API

Closes https://github.com/facebook/react-native/pull/1765
Github Author: James Ide <ide@jameside.com>
This commit is contained in:
James Ide
2015-08-04 05:23:31 -07:00
parent 18452940f0
commit 47e1d1aef8
7 changed files with 68 additions and 28 deletions
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51
Examples/UIExplorer/AsyncStorageExample.js
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@@ -29,18 +29,23 @@ var COLORS = ['red', 'orange', 'yellow', 'green', 'blue'];
var BasicStorageExample = React.createClass({
componentDidMount() {
AsyncStorage.getItem(STORAGE_KEY)
.then((value) => {
if (value !== null){
this.setState({selectedValue: value});
this._appendMessage('Recovered selection from disk: ' + value);
} else {
this._appendMessage('Initialized with no selection on disk.');
}
})
.catch((error) => this._appendMessage('AsyncStorage error: ' + error.message))
.done();
this._loadInitialState().done();
},
async _loadInitialState() {
try {
var value = await AsyncStorage.getItem(STORAGE_KEY);
if (value !== null){
this.setState({selectedValue: value});
this._appendMessage('Recovered selection from disk: ' + value);
} else {
this._appendMessage('Initialized with no selection on disk.');
}
} catch (error) {
this._appendMessage('AsyncStorage error: ' + error.message);
}
},
getInitialState() {
return {
selectedValue: COLORS[0],
@@ -80,19 +85,23 @@ var BasicStorageExample = React.createClass({
);
},
_onValueChange(selectedValue) {
async _onValueChange(selectedValue) {
this.setState({selectedValue});
AsyncStorage.setItem(STORAGE_KEY, selectedValue)
.then(() => this._appendMessage('Saved selection to disk: ' + selectedValue))
.catch((error) => this._appendMessage('AsyncStorage error: ' + error.message))
.done();
try {
await AsyncStorage.setItem(STORAGE_KEY, selectedValue);
this._appendMessage('Saved selection to disk: ' + selectedValue);
} catch (error) {
this._appendMessage('AsyncStorage error: ' + error.message);
}
},
_removeStorage() {
AsyncStorage.removeItem(STORAGE_KEY)
.then(() => this._appendMessage('Selection removed from disk.'))
.catch((error) => { this._appendMessage('AsyncStorage error: ' + error.message) })
.done();
async _removeStorage() {
try {
await AsyncStorage.removeItem(STORAGE_KEY);
this._appendMessage('Selection removed from disk.');
} catch (error) {
this._appendMessage('AsyncStorage error: ' + error.message);
}
},
_appendMessage(message) {