LFW211 Course Feedback
Hi all, I found a couple of typos or issues in the course, I was posting those in the wrong forum , so I will post them here again. The goal of this is to give you feedback on the course, so it can be improved if my feedback have value. Here is the first one:
1) In the page of the link below, the text mentions a flatstr package, but I couldn't find that package in the list of packages that the page shows.
https://trainingportal.linuxfoundation.org/learn/course/nodejs-application-development-lfw211/packages-dependencies/packages-dependencies?page=4
2) In the lab 2 on "Key Javascript Concepts" are some lines of code that validates the script with some assert statements:
https://trainingportal.linuxfoundation.org/learn/course/nodejs-application-development-lfw211/key-javascript-concepts/lab-exercises?page=2
assert(Object.getOwnPropertyNames(felixProto).length, 1)
assert(Object.getOwnPropertyNames(felixProtoProto).length, 1)
assert(Object.getOwnPropertyNames(felixProtoProto).length, 1)
assert(typeof felixProto.meow, 'function')
assert(typeof felixProtoProto.purr, 'function')
assert(typeof felixProtoProtoProto.hiss, 'function')
console.log('prototype checks passed!')
I believe that it should be like this (I put the change in bold text on the line with an arrow):
assert(Object.getOwnPropertyNames(felixProto).length, 1)
assert(Object.getOwnPropertyNames(felixProtoProto).length, 1)
---> assert(Object.getOwnPropertyNames(felixProtoProtoProto).length, 1)
assert(typeof felixProto.meow, 'function')
assert(typeof felixProtoProto.purr, 'function')
assert(typeof felixProtoProtoProto.hiss, 'function')
console.log('prototype checks passed!')
Regards.
Comments
-
I found a typo in this page:
I think the "url" part is missing:
const isMain = process.argv[1] &&
await realpath(fileURLToPath(import.meta.url)) ===
await realpath(process.argv[1])It should be:
const isMain = process.argv[1] &&
---> await realpath(url.fileURLToPath(import.meta.url)) ===
await realpath(process.argv[1])Regards.
1 -
The course is great, but I think the code examples could be changed to improved visibility, maybe something like this?:
Regards.
1 -
Found a little typo in:
Original code:
ee.addListener('close', () => {
console.log(close event fired!')
})Fixed (missing single quote after "close"):
ee.addListener('close', () => {
--> console.log('close event fired!')
})Regards.
0 -
Found a little typo in:
Original code:
const { EventEmitter } = require('events')
class MyEmitter extends EventEmitter {
constructor (opts = {}) {
super(opts)
this.name = opts.name
},
destroy (err) {
if (err) { this.emit('error', err) }
this.emit('close')
}
}Fixed (extra comma before "destroy"):
const { EventEmitter } = require('events')
class MyEmitter extends EventEmitter {
constructor (opts = {}) {
super(opts)
this.name = opts.name
--> }
destroy (err) {
if (err) { this.emit('error', err) }
this.emit('close')
}
}Regards.
0 -
I want to THANK you! I was combing through my code wondering what I did wrong, if there was a typo on my end, frustrated so much until I looked through the course forum and saw that you are the ONLY person who posted about this! You saved me HOURS of headache and frustration! As a complete green (aside from the Intro Course Mr Clements also put together) I'm far away from being a senior engineer and likely wouldn't have caught this on my own and research would have been tedious. THANK YOU SO MUCH!!!!!!
1 -
@a.taleghani said:
I want to THANK you! I was combing through my code wondering what I did wrong, if there was a typo on my end, frustrated so much until I looked through the course forum and saw that you are the ONLY person who posted about this! You saved me HOURS of headache and frustration! As a complete green (aside from the Intro Course Mr Clements also put together) I'm far away from being a senior engineer and likely wouldn't have caught this on my own and research would have been tedious. THANK YOU SO MUCH!!!!!!Wow!, I'm glad that those posts helped you!, that was the intention, to help others go through the course with less frustration facing these issues. You motivated me to keep doing it, thank you too for your message. Regards!.
0 -
In lab 14.1 the test.js file in line 7, "win32" value should be added to the regular expression, in case the lab is been used in Windows environment. Something like this:
assert.match(stdout.toString(), /^(d|w|l|aix|.+bsd|sunos|gnu|win32)/i, 'must output OS identifier')
0 -
On module 15, step "Process Configuration (1)" (https://trainingportal.linuxfoundation.org/learn/course/nodejs-application-development-lfw211/creating-child-processes/creating-child-processes?page=9) the example that should replace the env variables in the child process, well, doesn't, it shows the new defined variable "SUBPROCESS_SPECIFIC" among other variables:
Maybe this is because of my Windows environment?, I should try in linux.
0 -
On module 16, on "tap Test Library: req.js" step (https://trainingportal.linuxfoundation.org/learn/course/nodejs-application-development-lfw211/writing-unit-tests/writing-unit-tests?page=9) when running the test with tap I get a deprecated warning about using functions "ifError" and "strictDeepEqual", it says it should be replaced with "strictSame" and "error" respectively. I changed the code and works correctly with the suggested functions. I'm guessing my tap version is newer than the one used in the example.
0 -
On module 16, on "jest Framework: test/req.test.js" step (https://trainingportal.linuxfoundation.org/learn/course/nodejs-application-development-lfw211/writing-unit-tests/writing-unit-tests?page=12) there is no npm command that installs jest framework, so I'm guessing that this command is missing:
npm install --save-dev jest
test file runs after installing jest.
0 -
On module 16, on "Configuring package.json (2)" step (https://trainingportal.linuxfoundation.org/learn/course/nodejs-application-development-lfw211/writing-unit-tests/writing-unit-tests?page=15) an image showing the result of command "npm test" with tap is missing at the end of the page.
0 -
thanks so much @federicopenaranda really appreciate it, the course has been updated multiple times which can make some of these types of mistakes easier. We'll be putting out a update soon with all of these fixed plus updating to Node 18
1 -
You are welcome, it's good to know those posts helped you guys improve the course, I'm looking forward to check the new version of the course. Regards.
0
Categories
- All Categories
- 61 LFX Mentorship
- 114 LFX Mentorship: Linux Kernel
- 618 Linux Foundation IT Professional Programs
- 322 Cloud Engineer IT Professional Program
- 141 Advanced Cloud Engineer IT Professional Program
- 56 DevOps Engineer IT Professional Program
- 67 Cloud Native Developer IT Professional Program
- 6 Express Training Courses
- 6 Express Courses - Discussion Forum
- 2.3K Training Courses
- 19 LFC110 Class Forum - Discontinued
- 9 LFC131 Class Forum
- 31 LFD102 Class Forum
- 178 LFD103 Class Forum
- LFD110 Class Forum
- 24 LFD121 Class Forum
- LFD133 Class Forum
- 2 LFD137 Class Forum
- 62 LFD201 Class Forum
- 2 LFD210 Class Forum
- 1 LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- LFD233 Class Forum
- LFD237 Class Forum
- 23 LFD254 Class Forum
- 659 LFD259 Class Forum
- 108 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 4 LFD273 Class Forum
- LFS101 Class Forum
- LFS116 Class Forum
- 2 LFS145 Class Forum
- 28 LFS200 Class Forum
- 740 LFS201 Class Forum - Discontinued
- 1 LFS201-JP クラス フォーラム
- 13 LFS203 Class Forum
- 98 LFS207 Class Forum
- 301 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 38 LFS243 Class Forum
- 12 LFS244 Class Forum
- LFS245 Class Forum
- 41 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 143 LFS253 Class Forum
- LFS254 Class Forum
- LFS255 Class Forum
- 2 LFS256 Class Forum
- LFS257 Class Forum
- 1.2K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 108 LFS260 Class Forum
- 147 LFS261 Class Forum
- 39 LFS262 Class Forum
- 83 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 21 LFS267 Class Forum
- 18 LFS268 Class Forum
- 26 LFS269 Class Forum
- 204 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- 3 LFS281 Class Forum
- 258 LFW211 Class Forum
- 179 LFW212 Class Forum
- 9 SKF100 Class Forum
- SKF200 Class Forum
- 908 Hardware
- 221 Drivers
- 74 I/O Devices
- 44 Monitors
- 116 Multimedia
- 210 Networking
- 102 Printers & Scanners
- 86 Storage
- 765 Linux Distributions
- 88 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 24 openSUSE
- 144 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 357 Ubuntu
- 483 Linux System Administration
- 40 Cloud Computing
- 70 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 80 Network Management
- 108 System Management
- 52 Web Management
- 74 Mobile Computing
- 25 Android
- 34 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 544 Off Topic
- 131 Introductions
- 223 Small Talk
- 22 Study Material
- 835 Programming and Development
- 284 Kernel Development
- 517 Software Development
- 975 Software
- 261 Applications
- 185 Command Line
- 3 Compiling/Installing
- 119 Games
- 318 Installation
- 65 All In Program
- 65 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)