diff --git a/src/common/REARCHITECTURE.md b/src/common/REARCHITECTURE.md
index 1c008add4..c53cefe44 100644
--- a/src/common/REARCHITECTURE.md
+++ b/src/common/REARCHITECTURE.md
@@ -55,7 +55,6 @@ flowchart BT
 ## TypeScript projects
 
 - **`common/tsconfig.json`** — solution root; references each layer project (no sources).
-- **`common/tsconfig.compiler.json`** — shared `lib`, `paths`, and `types` for layer projects.
-- **`common/<layer>/tsconfig.json`** — composite project with `references` matching the dependency graph above. Test files (`**/*.test.ts`) are excluded from composite builds; unit tests compile via esbuild.
+- **`common/<layer>/tsconfig.json`** — self-contained composite project (`lib`, `paths`, `types`, `references`, `outDir`). Test files (`**/*.test.ts`) are excluded from composite builds; unit tests compile via esbuild.
 
 Buffer-layer code depends on `buffer/BufferService`, `buffer/BufferOptions`, and `buffer/BufferLog` instead of `services` so the `buffer` project does not reference `services`.
diff --git a/src/common/base/tsconfig.json b/src/common/base/tsconfig.json
index c1b9a7e80..ba2c5c6df 100644
--- a/src/common/base/tsconfig.json
+++ b/src/common/base/tsconfig.json
@@ -1,9 +1,30 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["./*"],
+      "common/encoding/*": ["../encoding/*"],
+      "common/data/*": ["../data/*"],
+      "common/buffer/*": ["../buffer/*"],
+      "common/parser/*": ["../parser/*"],
+      "common/input/*": ["../input/*"],
+      "common/services/*": ["../services/*"],
+      "common/terminal/*": ["../terminal/*"],
+      "common/public/*": ["../public/*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/base",
     "rootDir": "."
   },
diff --git a/src/common/buffer/tsconfig.json b/src/common/buffer/tsconfig.json
index b70446d14..447680400 100644
--- a/src/common/buffer/tsconfig.json
+++ b/src/common/buffer/tsconfig.json
@@ -1,9 +1,30 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["../base/*"],
+      "common/encoding/*": ["../encoding/*"],
+      "common/data/*": ["../data/*"],
+      "common/buffer/*": ["./*"],
+      "common/parser/*": ["../parser/*"],
+      "common/input/*": ["../input/*"],
+      "common/services/*": ["../services/*"],
+      "common/terminal/*": ["../terminal/*"],
+      "common/public/*": ["../public/*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/buffer",
     "rootDir": "."
   },
@@ -11,18 +32,12 @@
     "./**/*",
     "../../../typings/xterm.d.ts"
   ],
-  "references": [
-    {
-      "path": "../base"
-    },
-    {
-      "path": "../encoding"
-    },
-    {
-      "path": "../data"
-    }
-  ],
   "exclude": [
     "**/*.test.ts"
+  ],
+  "references": [
+    { "path": "../base" },
+    { "path": "../encoding" },
+    { "path": "../data" }
   ]
 }
diff --git a/src/common/data/tsconfig.json b/src/common/data/tsconfig.json
index 7fc7b11a3..c2e859649 100644
--- a/src/common/data/tsconfig.json
+++ b/src/common/data/tsconfig.json
@@ -1,21 +1,40 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["../base/*"],
+      "common/encoding/*": ["../encoding/*"],
+      "common/data/*": ["./*"],
+      "common/buffer/*": ["../buffer/*"],
+      "common/parser/*": ["../parser/*"],
+      "common/input/*": ["../input/*"],
+      "common/services/*": ["../services/*"],
+      "common/terminal/*": ["../terminal/*"],
+      "common/public/*": ["../public/*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/data",
     "rootDir": "."
   },
   "include": [
     "./**/*"
   ],
-  "references": [
-    {
-      "path": "../base"
-    }
-  ],
   "exclude": [
     "**/*.test.ts"
+  ],
+  "references": [
+    { "path": "../base" }
   ]
 }
diff --git a/src/common/encoding/tsconfig.json b/src/common/encoding/tsconfig.json
index 5e92f01fd..09a0e059f 100644
--- a/src/common/encoding/tsconfig.json
+++ b/src/common/encoding/tsconfig.json
@@ -1,21 +1,40 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["../base/*"],
+      "common/encoding/*": ["./*"],
+      "common/data/*": ["../data/*"],
+      "common/buffer/*": ["../buffer/*"],
+      "common/parser/*": ["../parser/*"],
+      "common/input/*": ["../input/*"],
+      "common/services/*": ["../services/*"],
+      "common/terminal/*": ["../terminal/*"],
+      "common/public/*": ["../public/*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/encoding",
     "rootDir": "."
   },
   "include": [
     "./**/*"
   ],
-  "references": [
-    {
-      "path": "../base"
-    }
-  ],
   "exclude": [
     "**/*.test.ts"
+  ],
+  "references": [
+    { "path": "../base" }
   ]
 }
diff --git a/src/common/input/tsconfig.json b/src/common/input/tsconfig.json
index fe9f7d0f6..d20c7e1a7 100644
--- a/src/common/input/tsconfig.json
+++ b/src/common/input/tsconfig.json
@@ -1,30 +1,44 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["../base/*"],
+      "common/encoding/*": ["../encoding/*"],
+      "common/data/*": ["../data/*"],
+      "common/buffer/*": ["../buffer/*"],
+      "common/parser/*": ["../parser/*"],
+      "common/input/*": ["./*"],
+      "common/services/*": ["../services/*"],
+      "common/terminal/*": ["../terminal/*"],
+      "common/public/*": ["../public/*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/input",
     "rootDir": "."
   },
   "include": [
     "./**/*"
   ],
-  "references": [
-    {
-      "path": "../base"
-    },
-    {
-      "path": "../data"
-    },
-    {
-      "path": "../encoding"
-    },
-    {
-      "path": "../parser"
-    }
-  ],
   "exclude": [
     "**/*.test.ts"
+  ],
+  "references": [
+    { "path": "../base" },
+    { "path": "../encoding" },
+    { "path": "../data" },
+    { "path": "../buffer" },
+    { "path": "../parser" }
   ]
 }
diff --git a/src/common/parser/tsconfig.json b/src/common/parser/tsconfig.json
index ce883e6ab..cd16ee7fe 100644
--- a/src/common/parser/tsconfig.json
+++ b/src/common/parser/tsconfig.json
@@ -1,24 +1,43 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["../base/*"],
+      "common/encoding/*": ["../encoding/*"],
+      "common/data/*": ["../data/*"],
+      "common/buffer/*": ["../buffer/*"],
+      "common/parser/*": ["./*"],
+      "common/input/*": ["../input/*"],
+      "common/services/*": ["../services/*"],
+      "common/terminal/*": ["../terminal/*"],
+      "common/public/*": ["../public/*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/parser",
     "rootDir": "."
   },
   "include": [
     "./**/*"
   ],
-  "references": [
-    {
-      "path": "../base"
-    },
-    {
-      "path": "../buffer"
-    }
-  ],
   "exclude": [
     "**/*.test.ts"
+  ],
+  "references": [
+    { "path": "../base" },
+    { "path": "../encoding" },
+    { "path": "../data" },
+    { "path": "../buffer" }
   ]
 }
diff --git a/src/common/public/tsconfig.json b/src/common/public/tsconfig.json
index 6ed803f4c..2614ecafd 100644
--- a/src/common/public/tsconfig.json
+++ b/src/common/public/tsconfig.json
@@ -1,9 +1,30 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["../base/*"],
+      "common/encoding/*": ["../encoding/*"],
+      "common/data/*": ["../data/*"],
+      "common/buffer/*": ["../buffer/*"],
+      "common/parser/*": ["../parser/*"],
+      "common/input/*": ["../input/*"],
+      "common/services/*": ["../services/*"],
+      "common/terminal/*": ["../terminal/*"],
+      "common/public/*": ["./*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/public",
     "rootDir": "."
   },
@@ -11,24 +32,17 @@
     "./**/*",
     "../../../typings/xterm.d.ts"
   ],
-  "references": [
-    {
-      "path": "../base"
-    },
-    {
-      "path": "../buffer"
-    },
-    {
-      "path": "../parser"
-    },
-    {
-      "path": "../services"
-    },
-    {
-      "path": "../terminal"
-    }
-  ],
   "exclude": [
     "**/*.test.ts"
+  ],
+  "references": [
+    { "path": "../base" },
+    { "path": "../encoding" },
+    { "path": "../data" },
+    { "path": "../buffer" },
+    { "path": "../parser" },
+    { "path": "../input" },
+    { "path": "../services" },
+    { "path": "../terminal" }
   ]
 }
diff --git a/src/common/services/tsconfig.json b/src/common/services/tsconfig.json
index 5cefbaea7..6ef9f1e7f 100644
--- a/src/common/services/tsconfig.json
+++ b/src/common/services/tsconfig.json
@@ -1,9 +1,30 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["../base/*"],
+      "common/encoding/*": ["../encoding/*"],
+      "common/data/*": ["../data/*"],
+      "common/buffer/*": ["../buffer/*"],
+      "common/parser/*": ["../parser/*"],
+      "common/input/*": ["../input/*"],
+      "common/services/*": ["./*"],
+      "common/terminal/*": ["../terminal/*"],
+      "common/public/*": ["../public/*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/services",
     "rootDir": "."
   },
@@ -11,27 +32,15 @@
     "./**/*",
     "../../../typings/xterm.d.ts"
   ],
-  "references": [
-    {
-      "path": "../base"
-    },
-    {
-      "path": "../encoding"
-    },
-    {
-      "path": "../data"
-    },
-    {
-      "path": "../buffer"
-    },
-    {
-      "path": "../parser"
-    },
-    {
-      "path": "../input"
-    }
-  ],
   "exclude": [
     "**/*.test.ts"
+  ],
+  "references": [
+    { "path": "../base" },
+    { "path": "../encoding" },
+    { "path": "../data" },
+    { "path": "../buffer" },
+    { "path": "../parser" },
+    { "path": "../input" }
   ]
 }
diff --git a/src/common/terminal/tsconfig.json b/src/common/terminal/tsconfig.json
index 0892376b4..598b4c8ad 100644
--- a/src/common/terminal/tsconfig.json
+++ b/src/common/terminal/tsconfig.json
@@ -1,9 +1,30 @@
 {
-  "extends": [
-    "../../tsconfig-library-base",
-    "../tsconfig.compiler.json"
-  ],
+  "extends": "../../tsconfig-library-base",
   "compilerOptions": {
+    "lib": [
+      "es2015",
+      "es2016.Array.Include",
+      "es2019.string",
+      "es2021.weakref",
+      "dom"
+    ],
+    "types": [
+      "../../../node_modules/@types/mocha"
+    ],
+    "paths": {
+      "@xterm/xterm": ["../../../typings/xterm.d.ts"],
+      "common/base/*": ["../base/*"],
+      "common/encoding/*": ["../encoding/*"],
+      "common/data/*": ["../data/*"],
+      "common/buffer/*": ["../buffer/*"],
+      "common/parser/*": ["../parser/*"],
+      "common/input/*": ["../input/*"],
+      "common/services/*": ["../services/*"],
+      "common/terminal/*": ["./*"],
+      "common/public/*": ["../public/*"],
+      "common/*": ["../*"],
+      "*": ["../../*"]
+    },
     "outDir": "../../../out/common/terminal",
     "rootDir": "."
   },
@@ -11,30 +32,16 @@
     "./**/*",
     "../../../typings/xterm.d.ts"
   ],
-  "references": [
-    {
-      "path": "../base"
-    },
-    {
-      "path": "../encoding"
-    },
-    {
-      "path": "../data"
-    },
-    {
-      "path": "../buffer"
-    },
-    {
-      "path": "../parser"
-    },
-    {
-      "path": "../input"
-    },
-    {
-      "path": "../services"
-    }
-  ],
   "exclude": [
     "**/*.test.ts"
+  ],
+  "references": [
+    { "path": "../base" },
+    { "path": "../encoding" },
+    { "path": "../data" },
+    { "path": "../buffer" },
+    { "path": "../parser" },
+    { "path": "../input" },
+    { "path": "../services" }
   ]
 }
diff --git a/src/common/tsconfig.compiler.json b/src/common/tsconfig.compiler.json
deleted file mode 100644
index b5b07d372..000000000
--- a/src/common/tsconfig.compiler.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-  "compilerOptions": {
-    "lib": [
-      "es2015",
-      "es2016.Array.Include",
-      "es2019.string",
-      "es2021.weakref",
-      "dom"
-    ],
-    "types": [
-      "../../node_modules/@types/mocha"
-    ],
-    "paths": {
-      "@xterm/xterm": ["../../typings/xterm.d.ts"],
-      "common/base/*": ["./base/*"],
-      "common/encoding/*": ["./encoding/*"],
-      "common/data/*": ["./data/*"],
-      "common/buffer/*": ["./buffer/*"],
-      "common/parser/*": ["./parser/*"],
-      "common/input/*": ["./input/*"],
-      "common/services/*": ["./services/*"],
-      "common/terminal/*": ["./terminal/*"],
-      "common/public/*": ["./public/*"],
-      "common/*": ["./*"],
-      "*": ["../*"]
-    }
-  }
-}