Basic knip configuration to replace ts-prune (#2418)

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## Self Checklist

- [x] I wrote a PR title in **English** and added an appropriate
**label** to the PR.
- [x] I wrote the commit message in **English** and to follow [**the
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specification**](https://www.conventionalcommits.org/en/v1.0.0/).
- [x] I [added the
**changeset**](https://github.com/changesets/changesets/blob/main/docs/adding-a-changeset.md)
about the changes that needed to be released. (or didn't have to)
- [x] I wrote or updated **documentation** related to the changes. (or
didn't have to)
- [x] I wrote or updated **tests** related to the changes. (or didn't
have to)
- [x] I tested the changes in various browsers. (or didn't have to)
  - Windows: Chrome, Edge, (Optional) Firefox
  - macOS: Chrome, Edge, Safari, (Optional) Firefox

## Related Issue

<!-- Please link to issue if one exists -->

<!-- Fixes #0000 -->

It resolves #2092 

## Summary

<!-- Please brief explanation of the changes made -->

- Replace usage of `ts-prune`to `knip` as `ts-prune` will no longer be
maintained

## Details

<!-- Please elaborate description of the changes -->

- Uninstall `ts-prune` and delete `tsconfig.prune.json` (which was
originally setup in `packages/bezier-react`)
- Install `knip` and add basic configuration on `knip.json` at the root
directory (to allow future expansion to other workspaces)
- To match the original `ts-prune` setup, only "files", "exports",
"types", "nsExports", "nsTypes" will be checked as errors (refer to the
[knip
documentation](https://knip.dev/explanations/comparison-and-migration#ts-prune))
- Although it is possible to check all workspaces within the monorepo,
it is currently restricted to check `packages/bezier-react` only (refer
to the [knip
documentation](https://knip.dev/features/monorepos-and-workspaces#lint-a-single-workspace))

### Breaking change? (No)

<!-- If Yes, please describe the impact and migration path for users -->

- To make `knip` work for all the other workspaces too (not only
`packages/bezier-react`), additional configuration in `knip.json` is
needed (refer to the [knip
documentation](https://knip.dev/explanations/entry-files))

## References

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aware of -->

---------

Co-authored-by: Yang Wooseong (Andrew) <[email protected]>

knip.json

@@ -0,0 +1,27 @@
+{
+  "workspaces": {
+    ".": {
+      "project": "src/**/*!"
+    },
+    "packages/bezier-react": {
+      "entry": "src/index.ts!",
+      "project": "src/**/*!",
+      "ignore": ["**/__mocks__/**", "src/utils/test.tsx"]
+    }
+  },
+  "rules": {
+    "files": "error",
+    "dependencies": "off",
+    "unlisted": "off",
+    "binaries": "off",
+    "unresolved": "off",
+    "exports": "error",
+    "types": "error",
+    "nsExports": "error",
+    "nsTypes": "error",
+    "enumMembers": "off",
+    "classMembers": "off",
+    "duplicates": "off"
+  },
+  "ignore": []
+}

package.json

@@ -18,7 +18,8 @@
     "release": "turbo run build --filter='@channel.io/*' && changeset publish",
     "update-snapshot": "yarn workspace @channel.io/bezier-react update-snapshot",
     "changeset": "changeset",
-    "postinstall": "husky install"
+    "postinstall": "husky install",
+    "knip": "knip --config knip.json --workspace packages/bezier-react --cache"
   },
   "devDependencies": {
     "@changesets/cli": "^2.27.1",
@@ -37,6 +38,7 @@
     "husky": "^9.0.11",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
+    "knip": "^5.27.3",
     "npm-run-all2": "^6.1.2",
     "prettier": "^3.2.5",
     "stylelint": "^16.3.0",

packages/bezier-react/package.json

@@ -38,8 +38,7 @@
     "lint": "run-p 'lint:*'",
     "lint:js": "TIMING=1 eslint --cache .",
     "lint:style": "stylelint --cache '**/*.scss'",
-    "typecheck": "yarn find-deadcode && tsc --noEmit",
-    "find-deadcode": "ts-prune -e -p ./tsconfig.prune.json",
+    "typecheck": "tsc --noEmit",
     "test": "jest --coverage",
     "test:watch": "jest --watch",
     "update-snapshot": "jest --updateSnapshot",
@@ -114,7 +113,6 @@
     "sass-loader": "^14.2.1",
     "storybook": "^8.1.10",
     "ts-patch": "^3.1.2",
-    "ts-prune": "^0.10.3",
     "tsconfig": "workspace:*",
     "tsconfig-paths-webpack-plugin": "^4.1.0",
     "typescript-plugin-css-modules": "^5.1.0",

turbo.json

@@ -16,6 +16,11 @@
       "outputs": [".jestcache/**", "coverage/*"],
       "inputs": ["src/**/*.tsx", "src/**/*.ts", "src/**/*.js"]
     },
+    "//#knip": {
+      "outputs": ["node_modules/.cache/knip"],
+      "inputs": ["knip.json", "packages/bezier-react/src/**/*"]
+    },
+
     "dev": {
       "cache": false,
       "persistent": true