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`‎JS/JS-br.md`

Lines changed: 11 additions & 13 deletions

Original file line number	Diff line number	Diff line change
@@ -814,28 +814,26 @@ A função `then` retorna uma instância da Promise, do qual é uma nova instân
`814`	`814`
`815`	`815`	Para `then`, ele pode essencialmente ser visto como flatMap`:
`816`	`816`
`817`		-For `then`, it can essentially be seen as `flatMap`:
`818`		`-`
`819`	`817`	```js
`820`		`-// three states`
	`818`	`+// árvore de estados`
`821`	`819`	`const PENDING = 'pending';`
`822`	`820`	`const RESOLVED = 'resolved';`
`823`	`821`	`const REJECTED = 'rejected';`
`824`		`-// promise accepts a function argument that will execute immediately.`
	`822`	`+// promise aceita um argumento na função que será executada imediatamente.`
`825`	`823`	`function MyPromise(fn) {`
`826`	`824`	`let _this = this;`
`827`	`825`	`_this.currentState = PENDING;`
`828`	`826`	`_this.value = undefined;`
`829`		- // To save the callback of `then`,only cached when the state of the promise is pending,
`830`		`- // at most one will be cached in every instance`
	`827`	+ // Save o callback do `then`, apenas em cache quando o estado da promise for pending,
	`828`	`+ // no máximo será cacheado em cada instância`
`831`	`829`	`_this.resolvedCallbacks = [];`
`832`	`830`	`_this.rejectedCallbacks = [];`
`833`	`831`
`834`	`832`	`_this.resolve = function(value) {`
`835`		`- // execute asynchronously to guarantee the execution order`
	`833`	`+ // execute assícronamente para garantir a ordem de execução`
`836`	`834`	`setTimeout(() => {`
`837`	`835`	`if (value instanceof MyPromise) {`
`838`		`- // if value is a Promise, execute recursively`
	`836`	`+ // se o valor é uma Promise, execute recursivamente`
`839`	`837`	`return value.then(_this.resolve, _this.reject)`
`840`	`838`	`}`
`841`	`839`	`if (_this.currentState === PENDING) {`
`@@ -847,7 +845,7 @@ function MyPromise(fn) {`
`847`	`845`	`}`
`848`	`846`
`849`	`847`	`_this.reject = function(reason) {`
`850`		`- // execute asynchronously to guarantee the execution order`
	`848`	`+ // execute assícronamente para garantir a ordem de execução`
`851`	`849`	`setTimeout(() => {`
`852`	`850`	`if (_this.currentState === PENDING) {`
`853`	`851`	`_this.currentState = REJECTED;`
`@@ -857,7 +855,7 @@ function MyPromise(fn) {`
`857`	`855`	`})`
`858`	`856`	`}`
`859`	`857`
`860`		`- // to solve the following problem`
	`858`	`+ // para resolver o seguinte problema`
`861`	`859`	// `new Promise(() => throw Error('error))`
`862`	`860`	`try {`
`863`	`861`	`fn(_this.resolve, _this.reject);`
`@@ -868,10 +866,10 @@ function MyPromise(fn) {`
`868`	`866`
`869`	`867`	`MyPromise.prototype.then = function(onResolved, onRejected) {`
`870`	`868`	`const self = this;`
`871`		- // specification 2.2.7, `then` must return a new promise
	`869`	+ // especificação 2.2.7, `then` deve retornar uma nova promise
`872`	`870`	`let promise2;`
`873`		- // specification 2.2, both `onResolved` and `onRejected` are optional arguments
`874`		- // it should be ignored if `onResolved` or `onRjected` is not a function,
	`871`	+ // especificação 2.2, ambos `onResolved` e `onRejected` são argumentos opcionais
	`872`	+ // isso deveria ser ignorado se `onResolved` ou `onRjected` não for uma função,
`875`	`873`	`// which implements the penetrate pass of it's value`
`876`	`874`	// `Promise.resolve(4).then().then((value) => console.log(value))`
`877`	`875`	`onResolved = typeof onResolved === 'function' ? onResolved : v => v;`

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