Promises 1-10

promise-shop/1.js

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+
+setTimeout(()=>console.log("TIMED OUT!"), 300);

promise-shop/10.js

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+'use strict'
+
+function iterate (num) {
+  console.log(num);
+  return ++num;
+};
+
+function alwaysThrows () {
+  throw new Error("OH NOES");
+};
+
+Promise.resolve(iterate(1))
+       .then(iterate)
+       .then(iterate)
+       .then(iterate)
+       .then(iterate)
+       .then(alwaysThrows)
+       .then(iterate)
+       .then(iterate)
+       .then(iterate)
+       .then(iterate)
+       .then(iterate)
+       .then(null, console.log);

promise-shop/2.js

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+'use strict';
+
+var promise = new Promise( (fulfill, reject)=>
+  setTimeout( ()=>fulfill("FULFILLED!"), 300)
+);
+
+promise.then(console.log);

promise-shop/3.js

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+'use strict'
+
+var promise = new Promise(function (fulfill, reject) {
+  setTimeout(()=>reject(new Error("REJECTED!")),300);
+});
+
+function onReject (error) {
+  console.log(error.message);
+}
+
+promise.then(null, onReject);

promise-shop/4.js

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+'use strict'
+
+let promise = new Promise(function(fulfill, reject){
+  fulfill("I FIRED");
+  reject(new Error("I DID NOT FIRE"));
+})
+
+promise.then(console.log, (error)=>console.log(error.message));

promise-shop/5.js

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+'use strict'
+
+let promise = new Promise(function(fulfill, reject){
+  fulfill('PROMISE VALUE');
+});
+
+promise.then(console.log, null);
+
+console.log('MAIN PROGRAM');

promise-shop/6.js

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+'use strict';
+
+var message;
+var promise;
+
+function randomBytes(n) {
+ return (Math.random() * Math.pow(256, n) | 0).toString(16);
+}
+
+message =
+     'A fatal exception ' + randomBytes(1) + ' has occurred at ' +
+     randomBytes(2) + ':' + randomBytes(4) + '. Your system\nwill be ' +
+     'terminated in 3 seconds.';
+
+promise = Promise.reject(new Error(message));
+
+promise.catch(function (err) {
+var i = 3;
+
+process.stderr.write(err.message);
+
+setTimeout(function boom() {
+   process.stderr.write('\rwill be terminated in ' + (--i) + ' seconds.');
+   if (!i) {
+     process.stderr.write('\n..... . . . boom . . . .....\n');
+   } else {
+     setTimeout(boom, 1000);
+   }
+ }, 1000);
+});

promise-shop/7.js

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+'use strict'
+
+first().then(second)
+       .then(console.log);

promise-shop/8.js

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+'use strict'
+
+function attachTitle(name){
+  return 'DR. ' + name;
+}
+
+let promise = Promise.resolve("MANHATTAN");
+
+promise.then(attachTitle).then(console.log);

promise-shop/9.js

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+'use strict'
+
+function parsePromised(someJson){
+  return new Promise( (fulfill, reject)=>{
+    try {
+      fulfill(JSON.parse(someJson));
+    }
+    catch(error){
+      console.log(error);
+    }
+   }
+  );
+};
+
+parsePromised(process.argv[2]).then(null, null);

promise-shop/package.json

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+{
+  "name": "promise-shop",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}