deepseek-harness/vendor/hmr/README.md

@cordisjs/plugin-hmr

Hot module replacement for loader-managed Cordis plugins.

The HMR plugin watches source files, traces Node's module graph, clears affected module caches, and reloads only the plugin entries that depend on changed application files. Changes to framework-level dependencies fall back to loader.exit(), letting the host process restart.

Module watches canonicalize their existing base directory before opening Chokidar. Exact config watches likewise canonicalize the deepest existing ancestor, then restore any missing suffix. Callbacks and diagnostics retain the requested absolute filename, while the native backend receives one filesystem spelling even when Windows supplied an 8.3 alias.

Requirements

• @cordisjs/plugin-loader
• @cordisjs/plugin-timer
• A runtime that exposes Node's internal module loader. The package throws if the loader service has no internal module loader available.

Usage

- id: timer
  name: '@cordisjs/plugin-timer'
- id: hmr
  name: '@cordisjs/plugin-hmr'
  config:
    root:
      - src
    ignored:
      - '**/node_modules'
      - '**/.*'
    debounce: 100

Config

Field	Description
base	Optional base directory resolved from ctx.baseUrl.
root	Chokidar roots to watch. Defaults to ['.'].
ignored	Picomatch patterns excluded from watch and reload analysis.
debounce	Milliseconds to wait before processing a burst of changes.

Events

Event	Description
hmr/change	Emitted for changed files that are not handled by plugin reload or config reload.
hmr/reload	Emitted after one or more plugin entries are reloaded.