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docs/devtools/tooling/installer/README.md
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docs/devtools/tooling/installer/README.md
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# @suaveplan/installer - Plugin host + lifecycle for project boilerplating and asset installation: detect → prompts → plan → apply → postInstall, transactional apply with rollback, conflict policies, manifest discovery.
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## Summary
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Plugin host for project boilerplating and asset installation. Pipelines
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plugins through `detect → prompts → plan → apply → postInstall` with
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transactional rollback, conflict resolution, and dry-run support.
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<!-- begin:auto-docs -->
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## Documentation tree
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- [bin](./src/bin/suaveplan-install.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs -->
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- [suaveplan-install](./src/bin/suaveplan-install.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs -->
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- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs -->
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- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs -->
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- [disk-fs](./src/fs/disk-fs.md) — Disk-backed implementation of `MutableInstallerFs` used by the `suaveplan-install` bin and any host-side code that want…
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- [installer-fs](./src/fs/installer-fs.md) — Re-exports the read-only `InstallerFs` interface from the types module and declares its mutating extension `MutableInst…
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- [memory-fs](./src/fs/memory-fs.md) — In-memory implementation of `MutableInstallerFs`. Used by the testing harness (`runPlugin` constructs one if the caller…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs --> - conflict — Resolves the per-op `conflict` policy on…
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- [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs --> - conflict — Resolves the per-op `conflict` policy on…
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- [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs --> - conflict — Resolves the per-op `conflict` policy on…
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- [conflict](./src/host/apply/conflict.md) — Resolves the per-op `conflict` policy on a target that already exists. Five policies are supported: `error` (raise `APP…
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- [json-merge](./src/host/apply/json-merge.md) — Implements the deep-merge semantics used by `patch-json` ops with `conflict: "merge"`. Match the conventions of `@suave…
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- [text-patch](./src/host/apply/text-patch.md) — Applies an ordered sequence of `TextEdit`s to a string. Used by `patch-text` ops to make targeted insertions/deletions/…
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- [detect](./src/host/detect.md) — Runs a plugin's optional `detect` stage inside an OpenTelemetry span. The plugin reports what is already present in the…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs --> - conflict — Resolves the per-op `conflict` policy on…
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- [plan](./src/host/plan.md) — Invokes `plugin.plan(answers, ctx)` and validates the returned `FileOp[]` against `FileOpsSchema` before letting them f…
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- [post-install](./src/host/post-install.md) — Runs the plugin's optional `postInstall` stage with abort propagation. This is where plugins do follow-up work that doe…
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- [prompts](./src/host/prompts.md) — Runs the plugin's optional `prompts` stage and validates the answers against the schema the plugin returns. This is whe…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs -->
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- [discover](./src/manifest/discover.md) — Walks the consumer's `node_modules` tree and returns every installer plugin matching the naming conventions: first-part…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_ <!-- end:auto-docs -->
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- [installer-fs.test-helpers](./src/testing/installer-fs.test-helpers.md) — Convenience helpers for assertions against the in-memory installer fs in plugin tests. `createMemoryFs(seed)` is a thin…
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- [run-plugin](./src/testing/run-plugin.md) — End-to-end test harness for plugins. `runPlugin(plugin, options)` wires up an in-memory filesystem, a scripted CLI, a n…
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- [script-cli](./src/testing/script-cli.md) — Non-TTY `InstallerCli` driven by pre-recorded answers. `ScriptCli` is the default CLI used by `runPlugin` — tests scrip…
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- [error-codes](./src/error-codes.md) — Defines the canonical error-code registry for `@suaveplan/installer` and the `InstallerError` class that carries those…
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<!-- end:auto-docs --> - [suaveplan-install](./src/bin/suaveplan-install.md) — <!-- begin:auto-docs --> _(no submodules)_- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_- [disk-fs](./src/fs/disk-fs.md) — Disk-backed implementation of `MutableInstallerFs` used by the `suaveplan-install` bin and any host-side code that want…
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- [installer-fs](./src/fs/installer-fs.md) — Re-exports the read-only `InstallerFs` interface from the types module and declares its mutating extension `MutableInst…
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- [memory-fs](./src/fs/memory-fs.md) — In-memory implementation of `MutableInstallerFs`. Used by the testing harness (`runPlugin` constructs one if the caller…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [conflict](./src/host/apply/conflict.md) — Resolves the per-op `conflict` policy on a target that already exists. Five policies are supported: `error` (raise `APP…
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- [json-merge](./src/host/apply/json-merge.md) — Implements the deep-merge semantics used by `patch-json` ops with `conflict: "merge"`. Match the conventions of `@suave…
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- [text-patch](./src/host/apply/text-patch.md) — Applies an ordered sequence of `TextEdit`s to a string. Used by `patch-text` ops to make targeted insertions/deletions/…
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- [detect](./src/host/detect.md) — Runs a plugin's optional `detect` stage inside an OpenTelemetry span. The plugin reports what is already present in the…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [plan](./src/host/plan.md) — Invokes `plugin.plan(answers, ctx)` and validates the returned `FileOp[]` against `FileOpsSchema` before letting them f…
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- [post-install](./src/host/post-install.md) — Runs the plugin's optional `postInstall` stage with abort propagation. This is where plugins do follow-up work that doe…
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- [prompts](./src/host/prompts.md) — Runs the plugin's optional `prompts` stage and validates the answers against the schema the plugin returns. This is whe…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_- [discover](./src/manifest/discover.md) — Walks the consumer's `node_modules` tree and returns every installer plugin matching the naming conventions: first-part…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_- [installer-fs.test-helpers](./src/testing/installer-fs.test-helpers.md) — Convenience helpers for assertions against the in-memory installer fs in plugin tests. `createMemoryFs(seed)` is a thin…
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- [run-plugin](./src/testing/run-plugin.md) — End-to-end test harness for plugins. `runPlugin(plugin, options)` wires up an in-memory filesystem, a scripted CLI, a n…
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- [script-cli](./src/testing/script-cli.md) — Non-TTY `InstallerCli` driven by pre-recorded answers. `ScriptCli` is the default CLI used by `runPlugin` — tests scrip…
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- [error-codes](./src/error-codes.md) — Defines the canonical error-code registry for `@suaveplan/installer` and the `InstallerError` class that carries those…
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- [suaveplan-install](./src/bin/suaveplan-install.md) — <!-- begin:auto-docs --> _(no submodules)_- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_- [disk-fs](./src/fs/disk-fs.md) — Disk-backed implementation of `MutableInstallerFs` used by the `suaveplan-install` bin and any host-side code that want…
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- [installer-fs](./src/fs/installer-fs.md) — Re-exports the read-only `InstallerFs` interface from the types module and declares its mutating extension `MutableInst…
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- [memory-fs](./src/fs/memory-fs.md) — In-memory implementation of `MutableInstallerFs`. Used by the testing harness (`runPlugin` constructs one if the caller…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [conflict](./src/host/apply/conflict.md) — Resolves the per-op `conflict` policy on a target that already exists. Five policies are supported: `error` (raise `APP…
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- [json-merge](./src/host/apply/json-merge.md) — Implements the deep-merge semantics used by `patch-json` ops with `conflict: "merge"`. Match the conventions of `@suave…
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- [text-patch](./src/host/apply/text-patch.md) — Applies an ordered sequence of `TextEdit`s to a string. Used by `patch-text` ops to make targeted insertions/deletions/…
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- [detect](./src/host/detect.md) — Runs a plugin's optional `detect` stage inside an OpenTelemetry span. The plugin reports what is already present in the…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [plan](./src/host/plan.md) — Invokes `plugin.plan(answers, ctx)` and validates the returned `FileOp[]` against `FileOpsSchema` before letting them f…
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- [post-install](./src/host/post-install.md) — Runs the plugin's optional `postInstall` stage with abort propagation. This is where plugins do follow-up work that doe…
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- [prompts](./src/host/prompts.md) — Runs the plugin's optional `prompts` stage and validates the answers against the schema the plugin returns. This is whe…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_- [discover](./src/manifest/discover.md) — Walks the consumer's `node_modules` tree and returns every installer plugin matching the naming conventions: first-part…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_- [installer-fs.test-helpers](./src/testing/installer-fs.test-helpers.md) — Convenience helpers for assertions against the in-memory installer fs in plugin tests. `createMemoryFs(seed)` is a thin…
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- [run-plugin](./src/testing/run-plugin.md) — End-to-end test harness for plugins. `runPlugin(plugin, options)` wires up an in-memory filesystem, a scripted CLI, a n…
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- [script-cli](./src/testing/script-cli.md) — Non-TTY `InstallerCli` driven by pre-recorded answers. `ScriptCli` is the default CLI used by `runPlugin` — tests scrip…
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- [error-codes](./src/error-codes.md) — Defines the canonical error-code registry for `@suaveplan/installer` and the `InstallerError` class that carries those…
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- [suaveplan-install](./src/bin/suaveplan-install.md) — <!-- begin:auto-docs --> _(no submodules)_- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_- [disk-fs](./src/fs/disk-fs.md) — Disk-backed implementation of `MutableInstallerFs` used by the `suaveplan-install` bin and any host-side code that want…
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- [installer-fs](./src/fs/installer-fs.md) — Re-exports the read-only `InstallerFs` interface from the types module and declares its mutating extension `MutableInst…
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- [memory-fs](./src/fs/memory-fs.md) — In-memory implementation of `MutableInstallerFs`. Used by the testing harness (`runPlugin` constructs one if the caller…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_- apply — <!-- begin:auto-docs --> _(no submodules)_…
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- [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_- conflict — Resolves the per-op `conflict` policy on…
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- [conflict](./src/host/apply/conflict.md) — Resolves the per-op `conflict` policy on a target that already exists. Five policies are supported: `error` (raise `APP…
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- [json-merge](./src/host/apply/json-merge.md) — Implements the deep-merge semantics used by `patch-json` ops with `conflict: "merge"`. Match the conventions of `@suave…
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- [text-patch](./src/host/apply/text-patch.md) — Applies an ordered sequence of `TextEdit`s to a string. Used by `patch-text` ops to make targeted insertions/deletions/…
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- [detect](./src/host/detect.md) — Runs a plugin's optional `detect` stage inside an OpenTelemetry span. The plugin reports what is already present in the…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_- apply — <!-- begin:auto-docs --> _(no submodules)_…
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- [plan](./src/host/plan.md) — Invokes `plugin.plan(answers, ctx)` and validates the returned `FileOp[]` against `FileOpsSchema` before letting them f…
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- [post-install](./src/host/post-install.md) — Runs the plugin's optional `postInstall` stage with abort propagation. This is where plugins do follow-up work that doe…
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- [prompts](./src/host/prompts.md) — Runs the plugin's optional `prompts` stage and validates the answers against the schema the plugin returns. This is whe…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_- [discover](./src/manifest/discover.md) — Walks the consumer's `node_modules` tree and returns every installer plugin matching the naming conventions: first-part…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_- [installer-fs.test-helpers](./src/testing/installer-fs.test-helpers.md) — Convenience helpers for assertions against the in-memory installer fs in plugin tests. `createMemoryFs(seed)` is a thin…
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- [run-plugin](./src/testing/run-plugin.md) — End-to-end test harness for plugins. `runPlugin(plugin, options)` wires up an in-memory filesystem, a scripted CLI, a n…
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- [script-cli](./src/testing/script-cli.md) — Non-TTY `InstallerCli` driven by pre-recorded answers. `ScriptCli` is the default CLI used by `runPlugin` — tests scrip…
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- [error-codes](./src/error-codes.md) — Defines the canonical error-code registry for `@suaveplan/installer` and the `InstallerError` class that carries those…
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- [suaveplan-install](./src/bin/suaveplan-install.md) — <!-- begin:auto-docs --> _(no submodules)_- [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_ - [errors](./src/errors/errors.md) — <!-- begin:auto-docs --> _(no submodules)_- [disk-fs](./src/fs/disk-fs.md) — Disk-backed implementation of `MutableInstallerFs` used by the `suaveplan-install` bin and any host-side code that want…
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- [installer-fs](./src/fs/installer-fs.md) — Re-exports the read-only `InstallerFs` interface from the types module and declares its mutating extension `MutableInst…
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- [memory-fs](./src/fs/memory-fs.md) — In-memory implementation of `MutableInstallerFs`. Used by the testing harness (`runPlugin` constructs one if the caller…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_ - [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_ - [apply](./src/host/apply/apply.md) — <!-- begin:auto-docs --> _(no submodules)_ - [conflict](./src/host/apply/conflict.md) — Resolves the per-op `conflict` policy on a target that already exists. Five policies are supported: `error` (raise `APP…
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- [json-merge](./src/host/apply/json-merge.md) — Implements the deep-merge semantics used by `patch-json` ops with `conflict: "merge"`. Match the conventions of `@suave…
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- [text-patch](./src/host/apply/text-patch.md) — Applies an ordered sequence of `TextEdit`s to a string. Used by `patch-text` ops to make targeted insertions/deletions/…
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- [detect](./src/host/detect.md) — Runs a plugin's optional `detect` stage inside an OpenTelemetry span. The plugin reports what is already present in the…
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- [host](./src/host/host.md) — <!-- begin:auto-docs --> _(no submodules)_ - [plan](./src/host/plan.md) — Invokes `plugin.plan(answers, ctx)` and validates the returned `FileOp[]` against `FileOpsSchema` before letting them f…
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- [post-install](./src/host/post-install.md) — Runs the plugin's optional `postInstall` stage with abort propagation. This is where plugins do follow-up work that doe…
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- [prompts](./src/host/prompts.md) — Runs the plugin's optional `prompts` stage and validates the answers against the schema the plugin returns. This is whe…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_ - [discover](./src/manifest/discover.md) — Walks the consumer's `node_modules` tree and returns every installer plugin matching the naming conventions: first-part…
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- [manifest](./src/manifest/manifest.md) — <!-- begin:auto-docs --> _(no submodules)_- [installer-fs.test-helpers](./src/testing/installer-fs.test-helpers.md) — Convenience helpers for assertions against the in-memory installer fs in plugin tests. `createMemoryFs(seed)` is a thin…
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- [run-plugin](./src/testing/run-plugin.md) — End-to-end test harness for plugins. `runPlugin(plugin, options)` wires up an in-memory filesystem, a scripted CLI, a n…
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- [script-cli](./src/testing/script-cli.md) — Non-TTY `InstallerCli` driven by pre-recorded answers. `ScriptCli` is the default CLI used by `runPlugin` — tests scrip…
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- [error-codes](./src/error-codes.md) — Defines the canonical error-code registry for `@suaveplan/installer` and the `InstallerError` class that carries those…
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## Quickstart
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```bash
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# Add a plugin to your project as a dev dep, then run the installer
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bun add -D @suaveplan/install-agent-skills
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npx @suaveplan/installer add agent-skills
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```
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## Programmatic use
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```ts
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import {
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Host,
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DiskFs,
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type InstallerContext,
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} from "@suaveplan/installer";
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const fs = new DiskFs({ cwd: process.cwd() });
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const host = new Host(ctx, fs);
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const result = await host.run(myPlugin, {
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dryRun: false,
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force: false,
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noInteractive: true,
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});
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console.log(result.summary);
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```
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## Testing harness
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```ts
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import { runPlugin, ScriptCli } from "@suaveplan/installer";
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const result = await runPlugin(myPlugin, {
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answers: { name: "agent-skills" },
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});
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expect(result.summary.written).toBeGreaterThan(0);
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```
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## Subpath exports
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- `@suaveplan/installer` — main barrel.
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- `@suaveplan/installer/types` — types-only.
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- `@suaveplan/installer/errors` — `INSTALLER_CODES`, `InstallerError`.
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- `@suaveplan/installer/host` — `Host`, stage runners, apply/conflict
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helpers.
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- `@suaveplan/installer/fs` — `DiskFs`, `MemoryFs`, `MutableInstallerFs`.
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- `@suaveplan/installer/manifest` — `discoverPlugins`, `findPlugin`,
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`loadManifest`, `validateManifest`.
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- `@suaveplan/installer/testing` — `runPlugin`, `ScriptCli`,
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`assertWrote`, `createMemoryFs`.
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## Module documentation
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Every implementation file ships with a sibling `.md` covering Purpose,
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Features, Usage examples, API Reference, and Implementation Notes. See
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`src/host/host.md`, `src/host/apply/apply.md`, `src/manifest/discover.md`
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for the load-bearing modules.
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## License
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MIT
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