button.pressed is a client register, do we have a scheme to implement those?

Check that devicescript version is good enough when deploying

The plan is for the method String.charCodeAt() to returns a Unicode code point (up to 21 bits), not UTF-16 character.
Similarly, String.length will return the number of 21-bit code points. Currently, they both assume strings is ASCII.

Once the UTF8 indexing is implemented, we need skip lists or similar in string, so that the following is reasonably fast:

let s = "ż" // force unicode
for (let i = 0; i < 2000; ++i) {
  s += "x"
}
for (let i = 2; i < s.length; ++i) {
  ds.assert(s[i] == "x")
  ds.assert(s.charCodeAt(i) == 0x78)
}

When we start debugging or run the program we should show the terminal window - it has nice colored output. I don't think showing the "output" is very useful (too much stuff in there)

Need to be able to spin up a virtual ds vm in node

https://github.com/microsoft/vscode/blob/930fd0e469a43fd923cd732c178e3cc9e878b58d/src/vscode-dts/vscode.d.ts#L6474

following install instructions, from a fresh repo, "yarn setup" fails. Also, get the message:

• warning package-lock.json found. Your project contains lock files generated by tools other than Yarn.

$ yarn setup
yarn run v1.22.19
warning package.json: No license field
error Command "setup" not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

$ yarn
yarn install v1.22.19
warning package.json: No license field
warning package-lock.json found. Your project contains lock files generated by tools other than Yarn. It is advised not to mix package managers in order to avoid resolution inconsistencies caused by unsynchronized lock files. To clear this warning, remove package-lock.json.
warning No license field
[1/4] Resolving packages...
success Already up-to-date.
Done in 0.46s.

on micro:bit microcode, the shake event does not trigger

var dotMatrix1 = roles.dotMatrix()
var accelerometer1 = roles.accelerometer()
accelerometer1.shake.subscribe(() => {
    dotMatrix1.dots.write(hex`000e0e0e00`)
    wait(1)
    dotMatrix1.dots.write(hex`1f1111111f`)
})

Same as typescript

I would like to run TypeDoc on the @devicescript/core package files so that we get an online documentation for those types. I need a folder with a tsconfig.json and an entry .ts file.

Is ./devs/lib/ the best place for that?

It should report errors and wait for the next change.

I will render it in the docs.

• stackblitz ignores files under .xxxx

Docs

https://github.com/microsoft/jacscript/blob/b038722401036129b36171f6c8e35a73c3cd1224/compiler/src/compiler.ts#L508

usb is not installed by default by the cli (should it)? User interface should notify user of missing package -- or install on the fly

This should run reasonably fast, but doesn't.

let s = ""
for (let i = 0; i < 2000; ++i) {
  s += "x"
}
ds.assert(s.length == 2000 && s[100] == "x")

When importing the vm js using importScript, we need to refer to the "Module" type which could lead to clashes.

Solution: rename to solution like JacscriptVMLoader

we use full "devicescript" in other service names

We should review the class names in our API layer:

• use of abbreviations? Maybe full words is better
• can we have RegisterBoolean?

and handle reconnecting

the dino is cool but...

Tell user they are not supported in device script

repro:

• start debugging with the "Play" button
• wait for the sim panel to open
• restart extension
• start debugging again with Play
• see two (or three or four ...) sim panels

fstor: formatting now
fstor: mounted; 4056 free

• homepage layout

If the start debug session is cancelled because of broken version number, the buttons stay greyed out.

It currently says "jacdac-posix device". we need someting more intuitive to show in the tree.

most VS Code extensions do not have "VS Code Extension" in their title

• shorten "DeviceScript Visual Studio Code Extension" to "DeviceScript"
• shorten "Visual Studio Code Extension for DeviceScript" to "DeviceScript"

Looks like "watch" got broken.

Do we need to run the program through the VM at build time?

The "old" docs still have various samples that don't fully compile. search for

```js

The concatenation operator (+) as well as the indexing operator need to convert arguments to string. This may involve calling user-defined .toString() method.

The plan:

• add a flag to devs_activation saying it's an implicit toString frame
• when .toString() needs to be called move back pc by one, copy any stack items, attach them to the activation frame for toString(), reset stack to zero
• upon return from toString frame - restore stack, in the calling opcode skip stuff based on the toString flag somehow

Alternative - STMT2_PLUS - stack is always empty

Alternative currently preferred - don't call .toString() implicitly and have the compiler warn about .toString()

Unplug, plug, no reconnect

• don't leak file (it's an internal data object to TypeSCript
• line number
• string categories instead of numbers

https://code.visualstudio.com/docs/nodejs/profiling#_analyzing-a-profile

vscode has a cool viewer for those files now.

The default way to start a debug session is to press the debug button or hit f5. VS Code then suggest to pick a debugger + file. We need to support this scenario.

(also the button we use gets hitten when multi-tabs)

Missing exports, typings on "setAll"

Use https://www.npmjs.com/package/@vscode/extension-telemetry

Need to compile icons into fonts, then add to contribute, then can be used as $(jacdac)...