Add iteratePropertyReferences(expressionNode, traceMap) to ReferenceTracker.

[ota-meshi]

I would like to see ReferenceTracker add methods to track properties of expression nodes.

Perhaps the implementation would look something like this:

    /**
     * Iterate the references of properties of the expression node.
     * @param {Node} node The expression node.
     * @param {object} traceMap The trace map.
     * @returns {IterableIterator<{node:Node,path:string[],type:symbol,info:any}>} The iterator to iterate references.
     */
    *iteratePropertyReferences(node, traceMap) {
        yield* this._iteratePropertyReferences(node, [], nextTraceMap);
    }

This is necessary to implement eslint-community/eslint-plugin-n#419 (Pass import.meta to the expression node), but I think it would be useful for other purposes as well.

[github-actions]

🎉 This issue has been resolved in version 4.5.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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