28 lines
1.3 KiB
Markdown
28 lines
1.3 KiB
Markdown
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# jsinspector-modern concepts
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## CDP object model
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### Target
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A debuggable entity that a debugger frontend can connect to.
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### Target Delegate
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An interface between a Target class and the underlying debuggable entity. For example, HostTargetDelegate is used by HostTarget to send host-related events to the native platform implementation.
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### Target Controller
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A private interface exposed by a Target class to its Sessions/Agents. For example, HostTargetController is used by HostAgent to safely access the host's HostTargetDelegate, without exposing HostTarget's other private state.
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### Session
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A single connection between a debugger frontend and a target. There can be multiple active sessions connected to the same target.
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### Agent
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A handler for a subset of CDP messages for a specific target as part of a specific session.
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### Agent Delegate
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An interface between an Agent class and some integration-specific, per-session logic/state it relies on (that does not fit in a Target Delegate). For example, a RuntimeAgentDelegate is used by RuntimeAgent to host Hermes's native CDP handler and delegate messages to it. The interface may look exactly like an Agent (purely CDP messages in/out) or there may be a more involved API to expose state/functionality needed by the Agent.
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