New history command (#40)

CHANGELOG.md

@@ -11,10 +11,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 - new example software programs: `demo.exe`, `target.exe`, `artifact`, `decrypt` & `identify`
+- new kernel commands: `echo`, `exit`, `history`
 - `software` programs logic can now be defined as Javascript code in `software.js`
 - `software` programs `messages` can now include **images** 🖼️, with an optional `glitch` / `particule` effect
 - `software` programs `messages` can now include text with an optional effects:
   `desync`, `shimmer`, `glow` or `hack-reveal`.
+- new supported configurations fields in `manifest.json` : `iconSize`, `iconClass`, `headerExtraHTML`
 - storing the commands history in the browser `localStorage`
 - allowing to configure the initial content of a user commands history
 - tab-completion of command names

README.md

@@ -409,7 +409,7 @@ You just need to share the correct link with your players and wait for them to r
 This is really a simple terminal emulation, as I've said.
 But, there are some things that could be also good to explore, like the creation of some local files or executable programs for the players to interact with.
 
-If you want to, drop some ideas into my Github repository or send me some messages at Reddit (u/jacksonbenete) and we can work out something else.
+If you want to, drop some ideas into my Github repository or send me some messages at Reddit ([u/jacksonbenete](https://www.reddit.com/user/jacksonbenete/)) and we can work out something else.
 
 ## Customization / what to do with this
 This section lists ideas to craft the perfect terminal for your game!
@@ -420,6 +420,7 @@ This section lists ideas to craft the perfect terminal for your game!
   by connecting to them with `telnet SERVERNAME` on [the online terminal](https://krymsonwake.github.io/email_terminal/)
 * hide clues in emails to figure other users **logins** & **passwords**, and also what other **servers** exist!
 * use [Z̶̡̼̰͎̬̔̂̇͑ą̵̨̩̖̺̠̹̯͉̇̇̿́̔̍̈́͋̄̈́̕͠ͅl̸̩̗͖͕̺̩͎̠̹̥͕̿̔̃̾̊̓̄͋͝͝g̸͙̺̬̰̙̯̹̼̲̦̔̾̐͑̒͘͝ô̷̯̹̣̖̤͎̿̽̏̆̐͗̾̋̐̚͘̕ text](https://en.wikipedia.org/wiki/Zalgo_text), like [@JAMacera](https://github.com/JAMacera/email_terminal/blob/master/config/database.json) did
+* usage for a sci-fi ttrpg one-shot: [ParadisPerdu](https://chezsoi.org/lucas/jdr/ParadisPerdu/acte-1/) - [config source](https://github.com/Lucas-C/email_terminal/tree/acte-1) - [scenario (French)](https://github.com/Lucas-C/jdr/tree/master/ParadisPerdu)
 
 Please suggest additions to this list based on your own usage,
 through a GitHub issue/PR or by contacting the author on Reddit.
@@ -437,4 +438,4 @@ through a GitHub issue/PR or by contacting the author on Reddit.
 - fbi.png icon by: https://iconscout.com/contributors/icon-mafia
 
 ### Icons Acknowledgement (not included)
-- (non-free) DNA icon by: https://www.iconfinder.com/icons/378473/dna_icon
+- (non-free) DNA icon by: https://www.iconfinder.com/icons/378473/dna_icon

src/error.js

@@ -1,90 +1,92 @@
 /* eslint no-unused-vars: 0 */
 
-class CommandNotFoundError extends Error {
+class FunctionalError extends Error {}
+
+class CommandNotFoundError extends FunctionalError {
     constructor( command ) {
         super();
         this.message = `${ command }: command not found`;
     }
 }
 
-class InvalidCommandParameter extends Error {
+class InvalidCommandParameter extends FunctionalError {
     constructor( command ) {
         super();
         this.message = `Invalid parameters pased to command ${ command }`;
     }
 }
 
-class AddressNotFoundError extends Error {
+class AddressNotFoundError extends FunctionalError {
     constructor( address ) {
         super();
         this.message = `Error : address ${ address } can't be reached`;
     }
 }
 
-class AddressIsEmptyError extends Error {
+class AddressIsEmptyError extends FunctionalError {
     constructor() {
         super();
         this.message = "Error: You need to specify an address";
     }
 }
 
-class UsernameIsEmptyError extends Error {
+class UsernameIsEmptyError extends FunctionalError {
     constructor() {
         super();
         this.message = "Empty user name provided";
     }
 }
 
-class InvalidCredsSyntaxError extends Error {
+class InvalidCredsSyntaxError extends FunctionalError {
     constructor() {
         super();
         this.message = "Invalid syntax for credentials provided: either provide just a username, or username:password";
     }
 }
 
-class InvalidPasswordError extends Error {
+class InvalidPasswordError extends FunctionalError {
     constructor( userName ) {
         super();
         this.message = `Invalid password provided for ${ userName }`;
     }
 }
 
-class MailServerIsEmptyError extends Error {
+class MailServerIsEmptyError extends FunctionalError {
     constructor() {
         super();
         this.message = "There is no new mail registered.";
     }
 }
 
-class InvalidMessageKeyError extends Error {
+class InvalidMessageKeyError extends FunctionalError {
     constructor() {
         super();
         this.message = "Invalid message key.";
     }
 }
 
-class AlreadyOnServerError extends Error {
+class AlreadyOnServerError extends FunctionalError {
     constructor( serverAddress ) {
         super();
         this.message = `You already are at ${ serverAddress }`;
     }
 }
 
-class UnknownUserError extends Error {
+class UnknownUserError extends FunctionalError {
     constructor( userName ) {
         super();
         this.message = `Unknown user ${ userName }`;
     }
 }
 
-class ServerRequireUsernameError extends Error {
+class ServerRequireUsernameError extends FunctionalError {
     constructor( serverAddress ) {
         super();
         this.message = `Server require a username to be accessed: ssh username@${ serverAddress }`;
     }
 }
 
-class JsonFetchParseError extends Error {
+class JsonFetchParseError extends FunctionalError {
     constructor( message ) {
         super();
         this.message = message;