Make dwds serve dart objects #982
Description
Currently, upon stack, scope, or object requests from IDEs, dwds does some heuristic processing of JavaScript frames and variables in current scope to make them appear as coming from dart. While that approach work in many cases due to JavaScript code produced by DDC being very close to dart, there are some corner cases where the heuristics fail. This also imposes limitations on changes in DDC, as they may break the heuristics.
We need a more reliable approach where the debugger can use compiler's symbol and type information, as well as mapping from JavaScript to dart symbol and type (via locations?) in order to have dart-oriented internal representation of stacks, scopes, and objects.
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