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mirror of https://github.com/kremalicious/metamask-extension.git synced 2024-11-23 18:41:38 +01:00
metamask-extension/app/scripts/lib/events-proxy.js

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/**
* Returns an EventEmitter that proxies events from the given event emitter
* @param {any} eventEmitter
* @param {object} listeners - The listeners to proxy to
* @returns {any}
*/
Fix lint warnings Fixed warnings: ```md app/scripts/controllers/computed-balances.js + 35:27 warning Missing space before function parentheses space-before-function-paren + 41:14 warning 'address' is never reassigned. Use 'const' instead prefer-const + 61:9 warning 'updater' is never reassigned. Use 'const' instead prefer-const + 68:11 warning 'newState' is never reassigned. Use 'const' instead prefer-const app/scripts/controllers/network.js + 104:29 warning Missing space before function parentheses space-before-function-paren app/scripts/lib/createLoggerMiddleware.js + 4:32 warning Missing space before function parentheses space-before-function-paren + 15:2 warning Newline required at end of file but not found eol-last app/scripts/lib/createOriginMiddleware.js + 4:32 warning Missing space before function parentheses space-before-function-paren + 9:2 warning Newline required at end of file but not found eol-last app/scripts/lib/createProviderMiddleware.js + 5:34 warning Missing space before function parentheses space-before-function-paren + 13:2 warning Newline required at end of file but not found eol-last app/scripts/lib/events-proxy.js + 1:50 warning Missing space before function parentheses space-before-function-paren + 31:2 warning Newline required at end of file but not found eol-last app/scripts/lib/nodeify.js + 2:22 warning Missing space before function parentheses space-before-function-paren + 2:24 warning Missing space before opening brace space-before-blocks + 5:18 warning Missing space before function parentheses space-before-function-paren + 5:20 warning Missing space before opening brace space-before-blocks app/scripts/lib/pending-balance-calculator.js + 16:19 warning Missing space before function parentheses space-before-function-paren app/scripts/lib/pending-tx-tracker.js + 85:11 warning '||' should be placed at the end of the line operator-linebreak + 87:11 warning '||' should be placed at the end of the line operator-linebreak + 88:11 warning '||' should be placed at the end of the line operator-linebreak + 90:11 warning '||' should be placed at the end of the line operator-linebreak + 91:11 warning '||' should be placed at the end of the line operator-linebreak app/scripts/lib/port-stream.js + 3:22 warning Missing space before function parentheses space-before-function-paren + 3:24 warning Missing space before opening brace space-before-blocks app/scripts/lib/tx-gas-utils.js + 84:2 warning Newline required at end of file but not found eol-last app/scripts/lib/tx-state-history-helper.js + 12:37 warning Missing space before function parentheses space-before-function-paren + 23:30 warning Missing space before function parentheses space-before-function-paren + 30:23 warning Missing space before function parentheses space-before-function-paren + 35:28 warning Missing space before function parentheses space-before-function-paren + 41:2 warning Newline required at end of file but not found eol-last app/scripts/lib/tx-state-manager.js + 94:13 warning 'value' is never reassigned. Use 'const' instead prefer-const ui/app/reducers.js + 45:7 warning 'state' is never reassigned. Use 'const' instead prefer-const + 53:7 warning 'stateString' is never reassigned. Use 'const' instead prefer-const ui/lib/tx-helper.js + 27:2 warning Newline required at end of file but not found eol-last ui/app/components/account-dropdowns.js + 163:1 warning More than 2 blank lines not allowed no-multiple-empty-lines ui/app/components/menu-droppo.js + 22:7 warning 'style' is never reassigned. Use 'const' instead prefer-const ui/app/components/shapeshift-form.js + 135:11 warning '&&' should be placed at the end of the line operator-linebreak ui/app/components/typed-message-renderer.js + 35:25 warning Missing space before function parentheses space-before-function-paren + 42:2 warning Newline required at end of file but not found eol-last mascara/server/index.js + 11:42 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 12:36 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 13:33 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 14:40 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 20:29 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 21:29 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 26:40 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat ```
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module.exports = function createEventEmitterProxy (eventEmitter, listeners) {
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let target = eventEmitter
const eventHandlers = listeners || {}
const proxy = /** @type {any} */ (new Proxy({}, {
get: (_, name) => {
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// intercept listeners
if (name === 'on') return addListener
if (name === 'setTarget') return setTarget
if (name === 'proxyEventHandlers') return eventHandlers
return (/** @type {any} */ (target))[name]
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},
set: (_, name, value) => {
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target[name] = value
return true
},
}))
function setTarget (/** @type {EventEmitter} */ eventEmitter) {
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target = eventEmitter
// migrate listeners
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Object.keys(eventHandlers).forEach((name) => {
/** @type {Array<Function>} */ (eventHandlers[name]).forEach((handler) => target.on(name, handler))
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})
}
/**
* Attaches a function to be called whenever the specified event is emitted
* @param {string} name
* @param {Function} handler
*/
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function addListener (name, handler) {
if (!eventHandlers[name]) eventHandlers[name] = []
eventHandlers[name].push(handler)
target.on(name, handler)
}
if (listeners) proxy.setTarget(eventEmitter)
return proxy
Fix lint warnings Fixed warnings: ```md app/scripts/controllers/computed-balances.js + 35:27 warning Missing space before function parentheses space-before-function-paren + 41:14 warning 'address' is never reassigned. Use 'const' instead prefer-const + 61:9 warning 'updater' is never reassigned. Use 'const' instead prefer-const + 68:11 warning 'newState' is never reassigned. Use 'const' instead prefer-const app/scripts/controllers/network.js + 104:29 warning Missing space before function parentheses space-before-function-paren app/scripts/lib/createLoggerMiddleware.js + 4:32 warning Missing space before function parentheses space-before-function-paren + 15:2 warning Newline required at end of file but not found eol-last app/scripts/lib/createOriginMiddleware.js + 4:32 warning Missing space before function parentheses space-before-function-paren + 9:2 warning Newline required at end of file but not found eol-last app/scripts/lib/createProviderMiddleware.js + 5:34 warning Missing space before function parentheses space-before-function-paren + 13:2 warning Newline required at end of file but not found eol-last app/scripts/lib/events-proxy.js + 1:50 warning Missing space before function parentheses space-before-function-paren + 31:2 warning Newline required at end of file but not found eol-last app/scripts/lib/nodeify.js + 2:22 warning Missing space before function parentheses space-before-function-paren + 2:24 warning Missing space before opening brace space-before-blocks + 5:18 warning Missing space before function parentheses space-before-function-paren + 5:20 warning Missing space before opening brace space-before-blocks app/scripts/lib/pending-balance-calculator.js + 16:19 warning Missing space before function parentheses space-before-function-paren app/scripts/lib/pending-tx-tracker.js + 85:11 warning '||' should be placed at the end of the line operator-linebreak + 87:11 warning '||' should be placed at the end of the line operator-linebreak + 88:11 warning '||' should be placed at the end of the line operator-linebreak + 90:11 warning '||' should be placed at the end of the line operator-linebreak + 91:11 warning '||' should be placed at the end of the line operator-linebreak app/scripts/lib/port-stream.js + 3:22 warning Missing space before function parentheses space-before-function-paren + 3:24 warning Missing space before opening brace space-before-blocks app/scripts/lib/tx-gas-utils.js + 84:2 warning Newline required at end of file but not found eol-last app/scripts/lib/tx-state-history-helper.js + 12:37 warning Missing space before function parentheses space-before-function-paren + 23:30 warning Missing space before function parentheses space-before-function-paren + 30:23 warning Missing space before function parentheses space-before-function-paren + 35:28 warning Missing space before function parentheses space-before-function-paren + 41:2 warning Newline required at end of file but not found eol-last app/scripts/lib/tx-state-manager.js + 94:13 warning 'value' is never reassigned. Use 'const' instead prefer-const ui/app/reducers.js + 45:7 warning 'state' is never reassigned. Use 'const' instead prefer-const + 53:7 warning 'stateString' is never reassigned. Use 'const' instead prefer-const ui/lib/tx-helper.js + 27:2 warning Newline required at end of file but not found eol-last ui/app/components/account-dropdowns.js + 163:1 warning More than 2 blank lines not allowed no-multiple-empty-lines ui/app/components/menu-droppo.js + 22:7 warning 'style' is never reassigned. Use 'const' instead prefer-const ui/app/components/shapeshift-form.js + 135:11 warning '&&' should be placed at the end of the line operator-linebreak ui/app/components/typed-message-renderer.js + 35:25 warning Missing space before function parentheses space-before-function-paren + 42:2 warning Newline required at end of file but not found eol-last mascara/server/index.js + 11:42 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 12:36 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 13:33 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 14:40 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 20:29 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 21:29 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat + 26:40 warning Use path.join() or path.resolve() instead of + to create paths no-path-concat ```
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}