livelykernel/lively.vm

Controlled JavaScript code execution and instrumentation.

This repository has moved to https://github.com/LivelyKernel/lively.next/tree/master/lively.vm

lively.vm's Issues

Error TypeError: Illegal invocation on global window functions...

I know this is bad code but it should run anyway, or shouldn't it?

var a = prompt('Hello', 'world');

// -> Error TypeError: Illegal invocation

// vs.

var b = window.prompt('Hello', 'world')

new.target not supported

The following code cannot be executed:

class Foo {
  constructor() {
    if (new.target === Foo) {
      throw new TypeError('Cannot construct Foo directly');
    }
  }
}

And produces the following error

lively.vm evalCodeTransform not working: SyntaxError: workspace://1: Unexpected token (8:28)
   6 |             key: Symbol.for('lively-instance-initialize'),
   7 |             value: function Foo_initialize_() {
>  8 |                 if ([object Object].[object Object] === __lvVarRecorder.Foo) {
     |                             ^
   9 |                     throw new TypeError('Cannot construct Foo directly');
  10 |                 }
  11 |             }
    at Parser.pp.raise (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:65149:13)
    at Parser.pp.unexpected (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:66379:8)
    at Parser.pp.expect (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:66373:33)
    at Parser.pp.parseExprList (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:64962:12)
    at Parser.pp.parseExprAtom (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:64564:28)
    at Parser.eval [as parseExprAtom] (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:67755:22)
    at Parser.pp.parseExprSubscripts (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:64413:19)
    at Parser.pp.parseMaybeUnary (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:64394:19)
    at Parser.pp.parseExprOps (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:64340:19)
    at Parser.pp.parseMaybeConditional (https://livelykernel.github.io/lively4-core/src/external/babel-browser.js:64322:19)

original error report: LivelyKernel/lively4-core#66

[class system] Static methods not inherited correctly

from @merryman: Something strange I encountered this morning: static members of classes are not inherited? Maybe I missed something but I was eventually forced to move back to instance methods and create a singleton instead….

extract class system

Our class implementation now lives to equal parts in lively.ast and here and fits in neither. Extract into a lively.classes package.