rsify/jay

😎 Supercharged JavaScript REPL

jay's Issues

Support save context

after exist all previous work is gone. can you support some feature to save the context?

Running 'jay' hangs for ~3 minutes when running behind network proxy on Windows

Simply running jay from the console on Windows hangs for about 3 minutes before eventually displaying the node, npm, and jay-repl versions (and prompt). This only happens when behind a network proxy. I've done some investigation and the code that causes this to hang is the following line in cli.ts.

version('npm', execa.sync('npm', ['-v']).stdout)

It appears that this is caused by a "bug" in npm. Apparently, version 4.4.0 of npm added an update check feature. When running npm commands via child_process the network proxy is not observed and thus a network timeout occurs after 3 minutes.

A workaround for this is to set the NO_UPDATE_NOTIFIER environment variable to false. I tested the following code that resolves this issue:

function getNpmVersion() {
	const env = {
		...process.env,
		NO_UPDATE_NOTIFIER: "true",
	};

	const result = execa.sync('npm', ['-v'], { env });

	return result.stdout;
}

Could you fix this? I tried cloning the repo to do a pull request but I am getting errors doing that too (which also appear to be network proxy related!).

node v10.13.0
npm v6.4.1
jay-repl v0.2.2

Thanks,
Jonathan

Evaluating `new Promise` crashes the program

Entering the following causes jay to exit immediately (without an error):

p = new Promise(() => {})

It works fine in node's REPL:

p = new Promise(() => {}) // => Promise { <pending> }

Possibly Related

• #17

Environment

• jay: 0.2.2
• node: v12.13.0
• OS: Linux (Arch)

autocomplete new definitions just typed

jay looks promising, normally we will create new variables etc under jay but jay seems ignore them for autocomplete, it will be nice is jay can remember any new definitions in current session and provide autocomplete for them on the go, so I don't need retype "superlongvariable" after the first time I did "let superlongvarible", instead jay will help to autocomplete it

Exit jay

Hi,

I'm loving jay, but have only just figured out how to exit via process.exit().

In my node repl it will respond to:

• Ctrl + C
• exit()

It'd be sweet if jay could do this too. I'm happy to have a look at making this work if you think it'd be accepted.

Sam

Command history persistence

Hi.
Does it store command history in a file anywhere? Node.js REPL, for example, saves the commands in a file at ~/.node_repl_history and loads it on the next invocation of a REPL, so you get a persistent history of the commands entered.

Feature request: Provide smart suggestion by TypeScript .d.ts file

For example here are index.js and index.d.ts

index.js

export default new Proxy(...)

index.d.ts

declare const x: { y: number, z: string }
export default x

Then when the repl loads index.js, it can infer that the default export have property y and z

Doing {{}} crashes the program

I was just tinkering with JavaScript objects, and I decided to make an object {{}}. This caused the program to crash.

> {{}} 
(node:13519) UnhandledPromiseRejectionWarning: evalmachine.<anonymous>:1
({{}})
  ^

SyntaxError: Unexpected token '{'
    at new Script (vm.js:99:7)
    at Object.<anonymous> (/Users/example/.npm/_npx/13516/lib/node_modules/jay-repl/dist/eval.js:92:24)
    at Generator.next (<anonymous>)
    at /Users/example/.npm/_npx/13516/lib/node_modules/jay-repl/dist/eval.js:7:71
    at new Promise (<anonymous>)
    at __awaiter (/Users/example/.npm/_npx/13516/lib/node_modules/jay-repl/dist/eval.js:3:12)
    at evaluate (/Users/example/.npm/_npx/13516/lib/node_modules/jay-repl/dist/eval.js:90:32)
    at /Users/example/.npm/_npx/13516/lib/node_modules/jay-repl/dist/cli.js:148:47
    at Generator.next (<anonymous>)
    at fulfilled (/Users/example/.npm/_npx/13516/lib/node_modules/jay-repl/dist/cli.js:5:58)
(node:13519) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
(node:13519) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

I tested this in the normal node repl, and it left undefined as expected.

> {{}}
undefined

Related: #24

Support .exit

I've gotten accustomed to typing .exit in the Node REPL in order to exit. Frankly, I realize this is a bad habit compared to just using ctrl-d (many more keystrokes are required) but I was wondering if it would be possible for jay to support .exit.

Input is always `await`ed, even when not prepended by `await`

Input:

Promise.resolve(5)

Output:

5

Expected:

Promise { 5 }

Error: Cannot find module 'fp-ts/lib/Either' (Linux, node 10)

Error: Error: Cannot find module 'fp-ts/lib/Either'

Stack:

$ node -v                                
v10.16.0

$ npm i -g jay-repl     
/home/tom/.nvm/versions/node/v10.16.0/bin/jay -> /home/tom/.nvm/versions/node/v10.16.0/lib/node_modules/jay-repl/dist/cli.js
npm WARN [email protected] requires a peer of fp-ts@^1.0.0 || ^2.0.0-rc.6 but none is installed. You must install peer dependencies yourself.

+ [email protected]
added 169 packages from 362 contributors in 2.182s

$ jay
internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'fp-ts/lib/Either'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (/home/tom/.nvm/versions/node/v10.16.0/lib/node_modules/jay-repl/node_modules/io-ts/lib/index.js:27:16)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)

Feature Request: Allow usage via code

It would be nice if we could programmatically call the jay repl and also inject our own variables inside. Basically emulate the node repl library but with the features of Jay. Would this be possible?

Add configuration option to disable pairing quotes and parenthesis pairing autocompletion

I find very uncomfortable to have forced auto-pairing completion.

An example that makes me make mistakes and/or type more instead of less:

Step 1: Date.parse("2019-07-31T22:13:54.697Z")
Step 2: now I want to check it, so I go to the beginning of the line, and type isNaN( and after the first parenthesis, jay autocompletes for me the second, leaving me with: isNaN()Date.parse("2019-07-31T22:13:54.697Z")

Now I have to delete the bad closing parenthesis. Some times is even worst since I forget about the autocompletion and go to the end to add the second one, and press ENTER, just to notice syntax is wrong.

Another way this results uncomfortable is when you paste something which gets auto-paired, causing bad syntax again.

I would vote to completely remove the feature, since I find it's not useful at all, but a configuration option to disable it would be ok too.

jay doesn't create its own cache directory

Installing Jay on a fresh install and then running it yields:

Error: ENOENT: no such file or directory, open '/Users/peter/Library/Caches/jay-repl-nodejs/history'
    at Object.openSync (fs.js:447:3)
    at Object.createHistorian (/usr/local/lib/node_modules/jay-repl/dist/history.js:12:41)

mkdir /Users/peter/Library/Caches/jay-repl-nodejs resolved the situation, but I assume this should be happening without my intervention.

failing to run jay in windows cmd

I installed globally and when I run the cmd jay I got the following error on windows.

....\system32>jay
...\jay-repl\dist\eval.js:75
template.console = new console_1.Console(process.stdout, process.stdin);
^

TypeError: Cannot set property console of # which has only a getter
at Object.createEvaluator (C:\Users\ARME-HYD-01\AppData\Roaming\npm\node_modules\jay-repl\dist\eval.js:75:22)
at main (C:\Users\ARME-HYD-01\AppData\Roaming\npm\node_modules\jay-repl\dist\cli.js:91:56)
at Object. (C:\Users\ARME-HYD-01\AppData\Roaming\npm\node_modules\jay-repl\dist\cli.js:160:1)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Function.Module.runMain (module.js:693:10)
at startup (bootstrap_node.js:191:16)

Throws when starting

System

macOS 10.14.6 (18G84)
Node.js v10.16.0
yarn 1.17.3

Steps

1. yarn global add jay-repl
2. jay

Expected

REPL starts.

Actual

Error: ENOENT: no such file or directory, open '/Users/moeriki/Library/Caches/jay-repl-nodejs/history'
    at Object.openSync (fs.js:443:3)
    at Object.createHistorian (/Users/moeriki/.config/yarn/global/node_modules/jay-repl/dist/history.js:12:41)
    at main (/Users/moeriki/.config/yarn/global/node_modules/jay-repl/dist/cli.js:94:33)
    at Object.<anonymous> (/Users/moeriki/.config/yarn/global/node_modules/jay-repl/dist/cli.js:170:1)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:829:12)

`jay --version` should display version information

Multiline commands aren't supported

It looks like I can't enter a multiline command in jay, e.g. a for loop:

> for (let applicant of applicants) { 
SyntaxError: Unexpected token (2:1)
> for (var i = 1; i < 10; i++) { 
SyntaxError: Unexpected token (2:1)

The same works fine in node REPL:

> const applicants = [1,2,3]
undefined
> for (let applicant of applicants) {
... console.log(applicant)
... }
1
2
3
undefined
> for (var i = 0; i < 3; i++) {
... console.log(i)
... }
0
1
2
undefined

Error: process.stdin.setRawMode does not exist

I can't start jay

When I first tried starting it, I got this:

$ npx -p jay-repl jay
npx: installed 175 in 19.921s
node v10.9.0 [email protected] [email protected]
jay is getting plugin support! Help us make the API suit you: https://github.com/nikersify/jay/pull/18
(node:20672) UnhandledPromiseRejectionWarning: Error: process.stdin.setRawMode does not exist
    at resolve (C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\36004\node_modules\jay-repl\dist\prompt.js:67:19)
    at new Promise (<anonymous>)
    at Object.promptLine [as default] (C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\36004\node_modules\jay-repl\dist\prompt.js:63:12)
    at C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\36004\node_modules\jay-repl\dist\cli.js:112:66
    at Generator.next (<anonymous>)
    at C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\36004\node_modules\jay-repl\dist\cli.js:8:71
    at new Promise (<anonymous>)
    at __awaiter (C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\36004\node_modules\jay-repl\dist\cli.js:4:12)
    at processPrompt (C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\36004\node_modules\jay-repl\dist\cli.js:111:20)
    at C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\36004\node_modules\jay-repl\dist\cli.js:172:9
(node:20672) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
(node:20672) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Thought that maybe it was because I was on an old version of Node, so I upgraded. Still getting the same error :(

$ npx -p jay-repl jay
npx: installed 175 in 15.339s
node v13.0.1 [email protected] [email protected]
jay is getting plugin support! Help us make the API suit you: https://github.com/nikersify/jay/pull/18
(node:35284) UnhandledPromiseRejectionWarning: Error: process.stdin.setRawMode does not exist
    at C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\27480\node_modules\jay-repl\dist\prompt.js:67:19
    at new Promise (<anonymous>)
    at Object.promptLine [as default] (C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\27480\node_modules\jay-repl\dist\prompt.js:63:12)
    at C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\27480\node_modules\jay-repl\dist\cli.js:112:66
    at Generator.next (<anonymous>)
    at C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\27480\node_modules\jay-repl\dist\cli.js:8:71
    at new Promise (<anonymous>)
    at __awaiter (C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\27480\node_modules\jay-repl\dist\cli.js:4:12)
    at processPrompt (C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\27480\node_modules\jay-repl\dist\cli.js:111:20)
    at C:\Users\tobbe\AppData\Roaming\npm-cache\_npx\27480\node_modules\jay-repl\dist\cli.js:172:9
(node:35284) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
(node:35284) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Windows 10, git-bash

Requiring built-in modules throws an error

Not sure if I'm missing something here - requiring standard NPM modules works as expected (such as const axios = require('axios')) but any built-in module such as fs or querystring fails:

node v12.4.0 [email protected] [email protected]
Type `> jay.help()` in the prompt for more information.
> const fs = require('fs')
C:\Users\Chris\AppData\Local\Yarn\Data\global\node_modules\jay-repl\dist\moduler.js:158
            throw new Error(`\`${id}\` has an invalid \`package.json\` file`);
            ^

Error: `fs` has an invalid `package.json` file
    at C:\Users\Chris\AppData\Local\Yarn\Data\global\node_modules\jay-repl\dist\moduler.js:158:19
    at Left.getOrElseL (C:\Users\Chris\AppData\Local\Yarn\Data\global\node_modules\fp-ts\lib\Either.js:127:16)
    at decodePkg (C:\Users\Chris\AppData\Local\Yarn\Data\global\node_modules\jay-repl\dist\moduler.js:157:13)
    at _resolve (C:\Users\Chris\AppData\Local\Yarn\Data\global\node_modules\jay-repl\dist\moduler.js:180:21)
    at _require (C:\Users\Chris\AppData\Local\Yarn\Data\global\node_modules\jay-repl\dist\moduler.js:191:39)
    at evalmachine.<anonymous>:1:12
    at Script.runInContext (vm.js:134:20)
    at Object.<anonymous> (C:\Users\Chris\AppData\Local\Yarn\Data\global\node_modules\jay-repl\dist\eval.js:94:41)
    at Generator.next (<anonymous>)
    at C:\Users\Chris\AppData\Local\Yarn\Data\global\node_modules\jay-repl\dist\eval.js:7:71
>

I'm on Windows 10 and installed jay globally with Yarn.

Images broken in readme

The GIF embeds aren't showing up in the repo's README file. For example:

https://raw.githubusercontent.com/nikersify/jay/master/media/features/eager-eval.gif