Standardized Debug

This proposal is at Stage 1 of the TC39 Process.

This proposal suggests adding the following meta-property-functions to ES:

• debugger.log ( v )
• debugger.break ( [ v ] )

Note that, like import(), they are only valid in call expression form. For example, x().then(debugger.break) would be invalid. You would have to do x().then((v) => debugger.break(v)). This limitation is in place to ensure these methods (particularly break) are only ever invoked from ECMAScript code.