diff --git a/resources/tester/helper_107_ford_free.cjs b/resources/tester/helper_107_ford_free.cjs
index 5ee26f04f..e780fdded 100644
--- a/resources/tester/helper_107_ford_free.cjs
+++ b/resources/tester/helper_107_ford_free.cjs
@@ -3,34 +3,19 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 // 화면 전용 모듈(토스트 · 글) — 기하 계산엔 안 쓰임
 const STUBS = {
   "@ui/ui_template_toast": { showToast: () => undefined },
 };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  if (full.endsWith(".json")) {
-    const data = JSON.parse(fs.readFileSync(full, "utf8"));
-    cache.set(full, data);
-    return data;
-  }
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-      esModuleInterop: true,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  interop: true,
+  requireFor: (full) => (request) => {
     if (CATALOG.isCatalogRequest(request)) return CATALOG;
     if (STUBS[request]) return STUBS[request];
     const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
@@ -38,11 +23,8 @@ function loadTs(file) {
       if (request.startsWith(prefix))
         return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const resolve = (base) =>
   [base, `${base}.ts`, path.join(base, "index.ts")].find(
     (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
diff --git a/resources/tester/helper_108_drag_box_hit.cjs b/resources/tester/helper_108_drag_box_hit.cjs
index f513ccd12..b2ebf8c0e 100644
--- a/resources/tester/helper_108_drag_box_hit.cjs
+++ b/resources/tester/helper_108_drag_box_hit.cjs
@@ -6,10 +6,9 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 /** 가로챌 모듈 — 아래에서 채운다(창 모듈을 부르기 전에). */
 let STUBS = {};
 
@@ -74,23 +73,15 @@ globalThis.document = {
 globalThis.window = { addEventListener: () => {}, removeEventListener: () => {} };
 globalThis.requestAnimationFrame = (fn) => fn();
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     if (request.startsWith("@util/"))
       return loadTs(path.join(ROOT, "common_util", `${request.slice(6)}.ts`));
     return loadTs(path.join(path.dirname(full), `${request}.ts`));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  return box.exports;
-}
+  },
+});
 
 const B06 = (name) => path.join(ROOT, "B06_Section", `${name}.ts`);
 const base = loadTs(B06("B06_Section_UI_Cross_Panel_Base"));
diff --git a/resources/tester/helper_115_8_corridor_loft.cjs b/resources/tester/helper_115_8_corridor_loft.cjs
index 4d89e3ba9..5102f7cf0 100644
--- a/resources/tester/helper_115_8_corridor_loft.cjs
+++ b/resources/tester/helper_115_8_corridor_loft.cjs
@@ -6,7 +6,7 @@ const fs = require("fs");
 const path = require("path");
 const ROOT = path.join(__dirname, "..", "..");
 const NM = path.join(ROOT, "config", "node_modules");
-const ts = require(path.join(NM, "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const THREE = require(path.join(NM, "three"));
 const LIBS = {
   three: THREE,
@@ -14,26 +14,18 @@ const LIBS = {
   // delaunator 는 ESM 전용 — Node 22 require(esm) 가 내주는 이름공간(default 포함).
   delaunator: require(path.join(NM, "delaunator", "index.js")),
   // three 부록(ESM 전용) — Node 22 require(esm).
-  "three/examples/jsm/utils/BufferGeometryUtils.js": require(path.join(NM, "three", "examples", "jsm", "utils", "BufferGeometryUtils.js")),
+  "three/examples/jsm/utils/BufferGeometryUtils.js": require(
+    path.join(NM, "three", "examples", "jsm", "utils", "BufferGeometryUtils.js"),
+  ),
   "@kninnug/constrainautor": {
     __esModule: true,
     default: require(path.join(NM, "@kninnug", "constrainautor", "lib", "Constrainautor.cjs")),
   },
 };
 
-const cache = new Map();
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (LIBS[request]) return LIBS[request];
     if (request.startsWith("@ui/") || request.startsWith("@config/")) {
       return new Proxy({}, { get: () => () => undefined });
@@ -43,10 +35,8 @@ function loadTs(file) {
       : path.join(path.dirname(full), request);
     if (request.endsWith(".json")) return JSON.parse(fs.readFileSync(target, "utf8"));
     return loadTs(fs.existsSync(`${target}.ts`) ? `${target}.ts` : path.join(target, "index.ts"));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  return box.exports;
-}
+  },
+});
 
 const B05 = (name) => path.join(ROOT, "B05_Profile", `${name}.ts`);
 const { buildCorridor } = loadTs(B05("B05_Profile_UI_Corridor_Build"));
@@ -179,7 +169,10 @@ function frameOf(bounds, x0, x1, y0, y1) {
     const x = p[0] + ox;
     const y = -p[2] + oy;
     return (
-      Math.abs(x - x0) < 1e-3 || Math.abs(x - x1) < 1e-3 || Math.abs(y - y0) < 1e-3 || Math.abs(y - y1) < 1e-3
+      Math.abs(x - x0) < 1e-3 ||
+      Math.abs(x - x1) < 1e-3 ||
+      Math.abs(y - y0) < 1e-3 ||
+      Math.abs(y - y1) < 1e-3
     );
   };
   return { boundary: (a, b) => on(a) && on(b) };
@@ -281,7 +274,6 @@ function lostVertices(tris, before, out) {
   return lost;
 }
 
-
 const results = {};
 
 /** 사면(구역 색) 삼각형 가로세로비(가장 긴 변² / 2 · 넓이) — 10 넘는 수 · 가장 큰 값(115-10). */
@@ -329,7 +321,8 @@ function shadeOf(out) {
   const p = mesh.geometry.getAttribute("position");
   const nrm = mesh.geometry.getAttribute("normal");
   const keep = mesh.userData.keepColor;
-  const vkey = (v) => `${Math.round(p.getX(v) * 1e3)},${Math.round(p.getY(v) * 1e3)},${Math.round(p.getZ(v) * 1e3)}`;
+  const vkey = (v) =>
+    `${Math.round(p.getX(v) * 1e3)},${Math.round(p.getY(v) * 1e3)},${Math.round(p.getZ(v) * 1e3)}`;
   const face = (t) => {
     const a = new THREE.Vector3().fromBufferAttribute(p, t * 3);
     const b = new THREE.Vector3().fromBufferAttribute(p, t * 3 + 1);
@@ -364,8 +357,14 @@ function shadeOf(out) {
     // 같은 자리 정점(두 삼각형 쪽) 법선 차.
     const other = (key) => (y.a === key ? y.va : y.vb);
     const jump = Math.max(
-      deg(new THREE.Vector3().fromBufferAttribute(nrm, x.va), new THREE.Vector3().fromBufferAttribute(nrm, other(x.a))),
-      deg(new THREE.Vector3().fromBufferAttribute(nrm, x.vb), new THREE.Vector3().fromBufferAttribute(nrm, other(x.kb))),
+      deg(
+        new THREE.Vector3().fromBufferAttribute(nrm, x.va),
+        new THREE.Vector3().fromBufferAttribute(nrm, other(x.a)),
+      ),
+      deg(
+        new THREE.Vector3().fromBufferAttribute(nrm, x.vb),
+        new THREE.Vector3().fromBufferAttribute(nrm, other(x.kb)),
+      ),
     );
     if (bend < 25) {
       jumps.push(jump);
@@ -424,7 +423,11 @@ function daylightPoints(out, bounds) {
     station(40, 40, 0, 0, 1, 96, 1.5),
   ];
   const spec = { bounds, x0: -10, x1: 50, y0: -25, y1: 25, step: 0.5, heightAt };
-  const { out, before, positions, heightIndex } = run({ sections, route: STRAIGHT, terrainSpec: spec });
+  const { out, before, positions, heightIndex } = run({
+    sections,
+    route: STRAIGHT,
+    terrainSpec: spec,
+  });
   const tris = trianglesOf(out.root);
   const gap = gapEdges(tris, out, frameOf(bounds, -10, 50, -25, 25));
   // 비탈 끝 오프셋 — 측점(0 · 20 · 40)에서 6 · 9 · 6(+ 노면 반폭) 그대로 · 사이는 단조 3차(115-9):
@@ -461,7 +464,7 @@ function daylightPoints(out, bounds) {
   // 측점 사이(x = 10) 단면은 지형에 맞춰 다시 그리지 않는다 — 노면 끝 0 → 비탈 끝 1 비율 보정.
   // 꼭대기 양옆 기울기 — 직선 보간이면 +0.15 · −0.15(차 0.3) · 3차면 둘 다 0 근처.
   const wAt = (x) => widthAt.get(Math.round(x * 100));
-  const kink = Math.abs((wAt(20) - wAt(19)) - (wAt(21) - wAt(20)));
+  const kink = Math.abs(wAt(20) - wAt(19) - (wAt(21) - wAt(20)));
   results.straight = {
     aspect: aspectOf(out),
     stats: out.stats,
@@ -513,7 +516,8 @@ function daylightPoints(out, bounds) {
     const a = pslg.tag[pslg.edges[e * 2]];
     const b = pslg.tag[pslg.edges[e * 2 + 1]];
     if (pslg.kinds[e] !== PSLG.EDGE_DESIGN) continue;
-    const fillCut = (a === PSLG.TAG_FILL && b === PSLG.TAG_CUT) || (a === PSLG.TAG_CUT && b === PSLG.TAG_FILL);
+    const fillCut =
+      (a === PSLG.TAG_FILL && b === PSLG.TAG_CUT) || (a === PSLG.TAG_CUT && b === PSLG.TAG_FILL);
     const ax = pslg.x[pslg.edges[e * 2]] + 20;
     const bx = pslg.x[pslg.edges[e * 2 + 1]] + 20;
     if (fillCut && Math.abs(ax - bx) > 0.21) crossEdges += 1;
@@ -649,7 +653,12 @@ results.hairpin = corner(10);
       [HALF + 13.5, 92],
       [40, 92],
     ];
-    const pts = [...half.map(([o, z]) => [-o, z]).reverse(), [-2.5, ROAD_Z], [2.5, ROAD_Z], ...half];
+    const pts = [
+      ...half.map(([o, z]) => [-o, z]).reverse(),
+      [-2.5, ROAD_Z],
+      [2.5, ROAD_Z],
+      ...half,
+    ];
     st.design.design_line = pts.map(([offset_m, elevation_m]) => ({ offset_m, elevation_m }));
     return st;
   };
diff --git a/resources/tester/helper_116_right_click_add.cjs b/resources/tester/helper_116_right_click_add.cjs
index 910383465..f757b5973 100644
--- a/resources/tester/helper_116_right_click_add.cjs
+++ b/resources/tester/helper_116_right_click_add.cjs
@@ -3,11 +3,10 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const session = new Map();
 const fakeStorage = {
   getItem: (k) => session.get(k) ?? null,
@@ -22,25 +21,16 @@ const STUBS = {
   "./ui_template_checkbox.css": {},
 };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (CATALOG.isCatalogRequest(request)) return CATALOG;
     if (STUBS[request]) return STUBS[request];
     if (request.startsWith(".")) return loadTs(path.join(path.dirname(full), `${request}.ts`));
     if (request.startsWith("@")) return new Proxy({}, { get: () => () => {} });
     return require(request);
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 
 const B05 = path.join(ROOT, "B05_Profile");
 const { addsAtOnce, finishAdd } = loadTs(
diff --git a/resources/tester/helper_118_pipe_pick.cjs b/resources/tester/helper_118_pipe_pick.cjs
index 40779c370..6b38ffe6a 100644
--- a/resources/tester/helper_118_pipe_pick.cjs
+++ b/resources/tester/helper_118_pipe_pick.cjs
@@ -4,10 +4,9 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 let STUBS = {
   "@ui/ui_template_toast": { showToast: () => undefined },
   "@ui/ui_template_elements": { showToast: () => undefined },
@@ -103,35 +102,18 @@ globalThis.document = {
 globalThis.window = { addEventListener: () => {}, removeEventListener: () => {} };
 globalThis.requestAnimationFrame = (fn) => fn();
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  if (full.endsWith(".json")) {
-    const data = JSON.parse(fs.readFileSync(full, "utf8"));
-    cache.set(full, data);
-    return data;
-  }
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-      esModuleInterop: true,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  interop: true,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
     for (const [prefix, dir] of Object.entries(alias))
       if (request.startsWith(prefix))
         return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const resolve = (base) =>
   [base, `${base}.ts`, path.join(base, "index.ts")].find(
     (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
diff --git a/resources/tester/helper_126_ford_fill.cjs b/resources/tester/helper_126_ford_fill.cjs
index 00eb19adf..f4e3f5d37 100644
--- a/resources/tester/helper_126_ford_fill.cjs
+++ b/resources/tester/helper_126_ford_fill.cjs
@@ -4,33 +4,23 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const toasts = [];
 const STUBS = { "@ui/ui_template_elements": { showToast: (message) => toasts.push(message) } };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     if (request === "@config/config_frontend")
       return loadTs(path.join(ROOT, "config", "config_frontend.ts"));
     if (request.startsWith(".")) return loadTs(path.join(path.dirname(full), `${request}.ts`));
     if (request.startsWith("@")) return new Proxy({}, { get: () => () => {} });
     return require(request);
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 
 const B05 = path.join(ROOT, "B05_Profile");
 const { addsAtOnce, finishAdd, FORD_WAIT_NOTICE } = loadTs(
diff --git a/resources/tester/helper_129_menu_equals_panel.cjs b/resources/tester/helper_129_menu_equals_panel.cjs
index 98fd5df57..f5ec01f34 100644
--- a/resources/tester/helper_129_menu_equals_panel.cjs
+++ b/resources/tester/helper_129_menu_equals_panel.cjs
@@ -5,10 +5,9 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const STUBS = { "@config/config_frontend": { API_BASE_URL: "/api", API_TIMEOUT_MS: 1000 } };
 // 드롭다운 항목 — 브라우저 `new Option(text, value)` 과 같은 칸만.
 globalThis.Option = class {
@@ -20,15 +19,9 @@ globalThis.Option = class {
   }
 };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     // 구조물 부품 상자(322-1) — JSON 그대로(트랜스파일이 기본 내보내기로 감쌈)
     if (request.endsWith(".json"))
@@ -37,11 +30,8 @@ function loadTs(file) {
     if (request.startsWith("@")) return new Proxy({}, { get: () => () => {} });
     if (request.endsWith(".css")) return {};
     return require(request);
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 
 const B05 = path.join(ROOT, "B05_Profile");
 const T = loadTs(path.join(B05, "B05_Profile_UI_Structures_Panel_Types.ts"));
diff --git a/resources/tester/helper_130_b07_plan_manage.cjs b/resources/tester/helper_130_b07_plan_manage.cjs
index e7649734e..1477ec432 100644
--- a/resources/tester/helper_130_b07_plan_manage.cjs
+++ b/resources/tester/helper_130_b07_plan_manage.cjs
@@ -5,11 +5,10 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
 const B07 = path.join(ROOT, "B07_DesignDetail");
-const cache = new Map();
 
 // ── 화면 그릇 흉내 ─────────────────────────────────────────────────────────────
 class FakeNode {
@@ -223,15 +222,9 @@ const API = {
   },
 };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     // 공용 카드(269) = 진짜 모듈(가짜 그릇 위에서 돎)
     if (request === "@ui/ui_template_collapsible")
@@ -239,11 +232,8 @@ function loadTs(file) {
     if (request === "./B07_DesignDetail_Api_Fetch") return API;
     if (request.startsWith(".")) return loadTs(path.join(path.dirname(full), `${request}.ts`));
     throw new Error(`stub 없음: ${request}`);
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 
 const settle = () => new Promise((done) => setTimeout(done, 0));
 const { buildDrawingSidePanel } = loadTs(path.join(B07, "B07_DesignDetail_UI_Panels.ts"));
diff --git a/resources/tester/helper_135_2_grayscale.cjs b/resources/tester/helper_135_2_grayscale.cjs
index 69b3ad7e2..69b47e6d5 100644
--- a/resources/tester/helper_135_2_grayscale.cjs
+++ b/resources/tester/helper_135_2_grayscale.cjs
@@ -4,19 +4,16 @@ const fs = require("fs");
 const path = require("path");
 const ROOT = path.resolve(__dirname, "..", "..");
 const NM = path.join(ROOT, "config", "node_modules");
-const ts = require(path.join(NM, "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const THREE = require(path.join(NM, "three"));
 
-function loadTs(file) {
-  const js = ts.transpileModule(fs.readFileSync(file, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  new Function("exports", "module", "require", js)(box.exports, box, (r) =>
-    r === "three" ? THREE : require(r),
-  );
-  return box.exports;
-}
+const { loadTs } = makeLoader({
+  root: ROOT,
+  cache: false,
+  requireFor: (full) => {
+    return (r) => (r === "three" ? THREE : require(r));
+  },
+});
 const B05 = (name) => path.join(ROOT, "B05_Profile", `${name}.ts`);
 const { TerrainBandSplit, ORIGINAL_COLORS } = loadTs(B05("B05_Profile_UI_Corridor_Split"));
 
diff --git a/resources/tester/helper_135_3_chute_solid.cjs b/resources/tester/helper_135_3_chute_solid.cjs
index 9eb750323..5cb934254 100644
--- a/resources/tester/helper_135_3_chute_solid.cjs
+++ b/resources/tester/helper_135_3_chute_solid.cjs
@@ -4,9 +4,8 @@
 const fs = require("fs");
 const path = require("path");
 const ROOT = path.join(__dirname, "..", "..");
-const ts = require(path.join(ROOT, "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
-const cache = new Map();
 const STUBS = {
   "@ui/ui_template_toast": { showToast: () => undefined },
   three: require(path.join(ROOT, "config", "node_modules", "three")),
@@ -15,34 +14,18 @@ const resolve = (base) =>
   [base, `${base}.ts`, path.join(base, "index.ts")].find(
     (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
   ) ?? `${base}.ts`;
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  if (full.endsWith(".json")) {
-    const data = JSON.parse(fs.readFileSync(full, "utf8"));
-    cache.set(full, data);
-    return data;
-  }
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-      esModuleInterop: true,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  interop: true,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
     for (const [prefix, dir] of Object.entries(alias))
       if (request.startsWith(prefix))
         return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  return box.exports;
-}
+  },
+});
 
 const B05 = (f) => path.join(ROOT, "B05_Profile", `${f}.ts`);
 const B06 = (f) => path.join(ROOT, "B06_Section", `${f}.ts`);
diff --git a/resources/tester/helper_136_chute_form_cache.cjs b/resources/tester/helper_136_chute_form_cache.cjs
index bbbc053dc..14f2df533 100644
--- a/resources/tester/helper_136_chute_form_cache.cjs
+++ b/resources/tester/helper_136_chute_form_cache.cjs
@@ -4,11 +4,10 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const session = new Map();
 const fakeStorage = {
   getItem: (k) => session.get(k) ?? null,
@@ -19,15 +18,9 @@ globalThis.window = { sessionStorage: fakeStorage, localStorage: fakeStorage };
 globalThis.sessionStorage = fakeStorage;
 globalThis.localStorage = fakeStorage;
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (CATALOG.isCatalogRequest(request)) return CATALOG;
     if (request.startsWith("@ui/")) return new Proxy({}, { get: () => () => {} });
     if (request.startsWith("@util/"))
@@ -37,11 +30,8 @@ function loadTs(file) {
     return request.startsWith(".")
       ? loadTs(path.join(path.dirname(full), `${request}.ts`))
       : require(request);
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 
 const options = loadTs(path.join(ROOT, "B06_Section", "B06_Section_UI_Page_Pipe_Options.ts"));
 
diff --git a/resources/tester/helper_137_design_pick.cjs b/resources/tester/helper_137_design_pick.cjs
index c45d0e9f6..208aa4da8 100644
--- a/resources/tester/helper_137_design_pick.cjs
+++ b/resources/tester/helper_137_design_pick.cjs
@@ -4,10 +4,9 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const STUBS = {
   "@ui/ui_template_toast": { showToast: () => undefined },
   "@ui/ui_template_elements": { showToast: () => undefined },
@@ -116,24 +115,10 @@ globalThis.document = {
   removeEventListener: () => {},
 };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  if (full.endsWith(".json")) {
-    const data = JSON.parse(fs.readFileSync(full, "utf8"));
-    cache.set(full, data);
-    return data;
-  }
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-      esModuleInterop: true,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  interop: true,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     if (request.endsWith(".css")) return {}; // 화면 꾸밈 — Node 에선 안 씀(138-4 모달 CSS)
     const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
@@ -141,11 +126,8 @@ function loadTs(file) {
       if (request.startsWith(prefix))
         return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const resolve = (base) =>
   [base, `${base}.ts`, path.join(base, "index.ts")].find(
     (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
diff --git a/resources/tester/helper_139_2_link_freeze.cjs b/resources/tester/helper_139_2_link_freeze.cjs
index bb5657f8f..7a820194a 100644
--- a/resources/tester/helper_139_2_link_freeze.cjs
+++ b/resources/tester/helper_139_2_link_freeze.cjs
@@ -4,39 +4,24 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const noop = new Proxy({}, { get: () => () => "" });
 // 조정창 모듈이 불러올 때 문서 이벤트를 검 — 기하엔 안 쓰임
 globalThis.document = { addEventListener: () => undefined };
 globalThis.window = globalThis;
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  if (full.endsWith(".json")) {
-    const data = JSON.parse(fs.readFileSync(full, "utf8"));
-    cache.set(full, data);
-    return data;
-  }
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     // 화면 전용(토스트 · 글 · 설정) — 기하엔 안 쓰임
     if (request.startsWith("@ui/") || request.startsWith("@config/")) return noop;
     if (request.startsWith("@util/"))
       return loadTs(resolve(path.join(ROOT, "common_util", request.slice(6))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const resolve = (base) =>
   [base, `${base}.ts`].find((p) => fs.existsSync(p) && fs.statSync(p).isFile()) ?? `${base}.ts`;
 
diff --git a/resources/tester/helper_139_3_ford_level.cjs b/resources/tester/helper_139_3_ford_level.cjs
index d1c9e6c21..e17cfb285 100644
--- a/resources/tester/helper_139_3_ford_level.cjs
+++ b/resources/tester/helper_139_3_ford_level.cjs
@@ -3,30 +3,20 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const noop = new Proxy({}, { get: () => () => "" });
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (request.startsWith("@ui/") || request.startsWith("@config/")) return noop;
     if (request.startsWith("@util/"))
       return loadTs(path.join(ROOT, "common_util", `${request.slice(6)}.ts`));
     return loadTs(path.join(path.dirname(full), `${request}.ts`));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 
 const { computeFordLayout, fordAdjustOf } = loadTs(
   path.join(ROOT, "B06_Section", "B06_Section_UI_Cross_Ford_Geom.ts"),
diff --git a/resources/tester/helper_139_4_buried_outlet.cjs b/resources/tester/helper_139_4_buried_outlet.cjs
index 8b8a20cb2..98e709a4b 100644
--- a/resources/tester/helper_139_4_buried_outlet.cjs
+++ b/resources/tester/helper_139_4_buried_outlet.cjs
@@ -4,26 +4,16 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const STUBS = { "@ui/ui_template_toast": { showToast: () => undefined } };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-      esModuleInterop: true,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  interop: true,
+  requireFor: (full) => (request) => {
     if (CATALOG.isCatalogRequest(request)) return CATALOG;
     if (STUBS[request]) return STUBS[request];
     const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
@@ -31,11 +21,8 @@ function loadTs(file) {
       if (request.startsWith(prefix))
         return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const resolve = (base) =>
   [base, `${base}.ts`, path.join(base, "index.ts")].find(
     (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
diff --git a/resources/tester/helper_139_6_line_shift.cjs b/resources/tester/helper_139_6_line_shift.cjs
index a8284f2e8..5921bc61a 100644
--- a/resources/tester/helper_139_6_line_shift.cjs
+++ b/resources/tester/helper_139_6_line_shift.cjs
@@ -3,10 +3,9 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 
 class Node {
   constructor(tag) {
@@ -81,22 +80,13 @@ const key = (name) =>
     fn({ key: name, target: null, preventDefault: () => undefined }),
   );
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const req = (r) =>
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (r) =>
     r.startsWith("@util/")
       ? loadTs(path.join(ROOT, "common_util", `${r.slice(6)}.ts`))
-      : loadTs(path.join(path.dirname(full), `${r}.ts`));
-  new Function("exports", "module", "require", js)(box.exports, box, req);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+      : loadTs(path.join(path.dirname(full), `${r}.ts`)),
+});
 
 const pick = loadTs(path.join(ROOT, "B06_Section", "B06_Section_UI_Cross_Design_Pick.ts"));
 const x = (o) => 100 - o * 12; // +offset = 화면 왼쪽
diff --git a/resources/tester/helper_139_6_pipe_fit.cjs b/resources/tester/helper_139_6_pipe_fit.cjs
index 0258b405d..e340f2916 100644
--- a/resources/tester/helper_139_6_pipe_fit.cjs
+++ b/resources/tester/helper_139_6_pipe_fit.cjs
@@ -5,33 +5,26 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const noop = new Proxy({}, { get: () => () => "" });
 globalThis.document = { addEventListener: () => undefined };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  if (full.endsWith(".json")) return JSON.parse(fs.readFileSync(full, "utf8"));
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const resolve = (base) =>
-    fs.existsSync(base) && fs.statSync(base).isFile() ? base : `${base}.ts`;
-  const req = (r) => {
-    if (r.startsWith("@ui/") || r.startsWith("@config/")) return noop;
-    if (r.startsWith("@util/")) return loadTs(resolve(path.join(ROOT, "common_util", r.slice(6))));
-    return loadTs(resolve(path.join(path.dirname(full), r)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, req);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => {
+    const resolve = (base) =>
+      fs.existsSync(base) && fs.statSync(base).isFile() ? base : `${base}.ts`;
+    const req = (r) => {
+      if (r.startsWith("@ui/") || r.startsWith("@config/")) return noop;
+      if (r.startsWith("@util/"))
+        return loadTs(resolve(path.join(ROOT, "common_util", r.slice(6))));
+      return loadTs(resolve(path.join(path.dirname(full), r)));
+    };
+    return req;
+  },
+});
 
 const { computeCrossDesign } = loadTs(
   path.join(ROOT, "common_util", "common_util_cross_design.ts"),
diff --git a/resources/tester/helper_150_detail_pick.cjs b/resources/tester/helper_150_detail_pick.cjs
index 9368350c3..444c7950a 100644
--- a/resources/tester/helper_150_detail_pick.cjs
+++ b/resources/tester/helper_150_detail_pick.cjs
@@ -3,30 +3,21 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 // 조정창 공용 부품(Design_Pick → Cross_Panel_Base · 151-3)이 불러올 때 문서에 귀를 닮
 globalThis.document = { addEventListener: () => {}, removeEventListener: () => {} };
 const resolve = (base) => (fs.existsSync(`${base}.ts`) ? `${base}.ts` : base);
-function loadTs(full) {
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (request.endsWith(".css")) return {};
     if (request.startsWith("@util/"))
       return loadTs(resolve(path.join(ROOT, "common_util", request.slice(6))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const pick = loadTs(path.join(ROOT, "B06_Section", "B06_Section_UI_Cross_Detail_Pick.ts"));
 
 // ── 그림 복제 흉내 — 평평한 요소 목록 · 「tag.class」 · 「.class」 · 「g.class line」 · 「:not(.class)」 만 ──
diff --git a/resources/tester/helper_152_2_link_height.cjs b/resources/tester/helper_152_2_link_height.cjs
index 8fa879473..b36bb3b4c 100644
--- a/resources/tester/helper_152_2_link_height.cjs
+++ b/resources/tester/helper_152_2_link_height.cjs
@@ -4,44 +4,26 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 // 화면 전용 모듈(토스트 · 글) — 기하 계산엔 안 쓰임
 const STUBS = {
   "@ui/ui_template_toast": { showToast: () => undefined },
 };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  if (full.endsWith(".json")) {
-    const data = JSON.parse(fs.readFileSync(full, "utf8"));
-    cache.set(full, data);
-    return data;
-  }
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-      esModuleInterop: true,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  interop: true,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
     for (const [prefix, dir] of Object.entries(alias))
       if (request.startsWith(prefix))
         return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const resolve = (base) =>
   [base, `${base}.ts`, path.join(base, "index.ts")].find(
     (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
diff --git a/resources/tester/helper_152_3_chute_cut.cjs b/resources/tester/helper_152_3_chute_cut.cjs
index 9963064cb..2981239e8 100644
--- a/resources/tester/helper_152_3_chute_cut.cjs
+++ b/resources/tester/helper_152_3_chute_cut.cjs
@@ -4,26 +4,16 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 const STUBS = { "@ui/ui_template_toast": { showToast: () => undefined } };
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-      esModuleInterop: true,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  interop: true,
+  requireFor: (full) => (request) => {
     if (CATALOG.isCatalogRequest(request)) return CATALOG;
     if (STUBS[request]) return STUBS[request];
     const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
@@ -31,11 +21,8 @@ function loadTs(file) {
       if (request.startsWith(prefix))
         return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const resolve = (base) =>
   [base, `${base}.ts`, path.join(base, "index.ts")].find(
     (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
diff --git a/resources/tester/helper_152_4_chute_pick.cjs b/resources/tester/helper_152_4_chute_pick.cjs
index d18e1a16d..3ac79ab80 100644
--- a/resources/tester/helper_152_4_chute_pick.cjs
+++ b/resources/tester/helper_152_4_chute_pick.cjs
@@ -4,10 +4,9 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 let STUBS = {
   "@ui/ui_template_toast": { showToast: () => undefined },
   "@ui/ui_template_elements": { showToast: () => undefined },
@@ -108,35 +107,18 @@ globalThis.document = {
 globalThis.window = { addEventListener: () => {}, removeEventListener: () => {} };
 globalThis.requestAnimationFrame = (fn) => fn();
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  if (full.endsWith(".json")) {
-    const data = JSON.parse(fs.readFileSync(full, "utf8"));
-    cache.set(full, data);
-    return data;
-  }
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: {
-      module: ts.ModuleKind.CommonJS,
-      target: ts.ScriptTarget.ES2020,
-      esModuleInterop: true,
-    },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  interop: true,
+  requireFor: (full) => (request) => {
     if (STUBS[request]) return STUBS[request];
     const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
     for (const [prefix, dir] of Object.entries(alias))
       if (request.startsWith(prefix))
         return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 const resolve = (base) =>
   [base, `${base}.ts`, path.join(base, "index.ts")].find(
     (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
diff --git a/resources/tester/helper_152_5_pavement_pick.cjs b/resources/tester/helper_152_5_pavement_pick.cjs
index 3752a6297..857c34a2f 100644
--- a/resources/tester/helper_152_5_pavement_pick.cjs
+++ b/resources/tester/helper_152_5_pavement_pick.cjs
@@ -3,7 +3,7 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
 
@@ -37,16 +37,14 @@ class FakeNode {
 globalThis.document = { createElementNS: (_, tag) => new FakeNode(tag) };
 
 function loadTs(file, stubs = {}) {
-  const js = ts.transpileModule(fs.readFileSync(file, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  const localRequire = (request) => {
-    if (stubs[request]) return stubs[request];
-    throw new Error(`stub 없음: ${request}`);
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  return box.exports;
+  return makeLoader({
+    root: ROOT,
+    cache: false,
+    requireFor: (full) => (request) => {
+      if (stubs[request]) return stubs[request];
+      throw new Error(`stub 없음: ${request}`);
+    },
+  }).loadTs(file);
 }
 
 const surface = loadTs(path.join(ROOT, "B06_Section", "B06_Section_UI_Cross_Design_Surface.ts"));
diff --git a/resources/tester/helper_153_b07_cross_layout.cjs b/resources/tester/helper_153_b07_cross_layout.cjs
index 1266a6f49..228cc3d9e 100644
--- a/resources/tester/helper_153_b07_cross_layout.cjs
+++ b/resources/tester/helper_153_b07_cross_layout.cjs
@@ -4,13 +4,12 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)
 
 const ROOT = path.join(__dirname, "..", "..");
 const B07 = path.join(ROOT, "B07_DesignDetail");
 const UI = path.join(ROOT, "ui_template");
-const cache = new Map();
 
 class FakeNode {
   constructor(tag) {
@@ -66,15 +65,9 @@ const byClass = (node, name) => all(node).filter((n) => n.classList.contains(nam
 globalThis.document = { createElement: (tag) => new FakeNode(tag) };
 
 const toasts = [];
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (CATALOG.isCatalogRequest(request)) return CATALOG;
     if (request === "@ui/ui_template_elements")
       return {
@@ -94,11 +87,8 @@ function loadTs(file) {
       return fs.existsSync(target) ? loadTs(target) : {};
     }
     return {}; // 이 시험이 안 부르는 바깥 길(API · 설정 · CAD)
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 
 const { buildDrawingSidePanel, buildCrossLayoutControls } = loadTs(
   path.join(B07, "B07_DesignDetail_UI_Panels.ts"),
diff --git a/resources/tester/helper_164_detail_zoom.cjs b/resources/tester/helper_164_detail_zoom.cjs
index 6660904f0..3c4b97ed5 100644
--- a/resources/tester/helper_164_detail_zoom.cjs
+++ b/resources/tester/helper_164_detail_zoom.cjs
@@ -5,6 +5,7 @@
 const fs = require("fs");
 const path = require("path");
 const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
 const B06 = path.join(ROOT, "B06_Section");
@@ -41,19 +42,15 @@ const STUBS = {
   "./B06_Section_UI_Cross_Detail_Cad": { mountNoteCad: () => {}, stationNoLabel: () => "" },
 };
 const resolve = (base) => (fs.existsSync(`${base}.ts`) ? `${base}.ts` : base);
-function loadTs(full) {
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  cache: false,
+  requireFor: (full) => (request) => {
     if (request.endsWith(".css")) return {};
     if (STUBS[request]) return STUBS[request];
     return loadTs(resolve(path.join(path.dirname(full), request)));
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  return box.exports;
-}
+  },
+});
 
 function el(tag) {
   const attrs = {};
diff --git a/resources/tester/helper_165_pavement_flow.cjs b/resources/tester/helper_165_pavement_flow.cjs
index fb032a084..114dd599b 100644
--- a/resources/tester/helper_165_pavement_flow.cjs
+++ b/resources/tester/helper_165_pavement_flow.cjs
@@ -5,23 +5,21 @@
  */
 const fs = require("fs");
 const path = require("path");
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)
 
 const ROOT = path.join(__dirname, "..", "..");
 
 function loadTs(file, stubs = {}) {
-  const js = ts.transpileModule(fs.readFileSync(file, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  const localRequire = (request) => {
-    if (CATALOG.isCatalogRequest(request)) return CATALOG;
-    if (stubs[request]) return stubs[request];
-    throw new Error(`stub 없음: ${request}`);
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  return box.exports;
+  return makeLoader({
+    root: ROOT,
+    cache: false,
+    requireFor: (full) => (request) => {
+      if (CATALOG.isCatalogRequest(request)) return CATALOG;
+      if (stubs[request]) return stubs[request];
+      throw new Error(`stub 없음: ${request}`);
+    },
+  }).loadTs(file);
 }
 
 // 세션(structure-pick) — 메모리 한 벌
diff --git a/resources/tester/helper_166_1_note_options.cjs b/resources/tester/helper_166_1_note_options.cjs
index 6f2912ab2..b74d171d3 100644
--- a/resources/tester/helper_166_1_note_options.cjs
+++ b/resources/tester/helper_166_1_note_options.cjs
@@ -5,28 +5,18 @@
 const fs = require("fs");
 const path = require("path");
 const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)
-const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const { makeLoader } = require("./helper_ts_stub_loader.cjs");
 
 const ROOT = path.join(__dirname, "..", "..");
-const cache = new Map();
 
-function loadTs(file) {
-  const full = path.resolve(file);
-  if (cache.has(full)) return cache.get(full);
-  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-  }).outputText;
-  const box = { exports: {} };
-  cache.set(full, box.exports);
-  const localRequire = (request) => {
+const { loadTs } = makeLoader({
+  root: ROOT,
+  requireFor: (full) => (request) => {
     if (CATALOG.isCatalogRequest(request)) return CATALOG; // 구조물 표(본보기 · 323-7)
     if (request.startsWith(".")) return loadTs(path.join(path.dirname(full), `${request}.ts`));
     return require(request);
-  };
-  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
-  cache.set(full, box.exports);
-  return box.exports;
-}
+  },
+});
 
 const { structureOptionLines } = loadTs(
   path.join(ROOT, "B05_Profile", "logic", "B05_Profile_UI_Structures_Balloon.ts"),
diff --git a/resources/tester/helper_ts_stub_loader.cjs b/resources/tester/helper_ts_stub_loader.cjs
index baabafd03..d41c94492 100644
--- a/resources/tester/helper_ts_stub_loader.cjs
+++ b/resources/tester/helper_ts_stub_loader.cjs
@@ -7,7 +7,7 @@
  *   const { load, loadTs } = makeLoader({ root: ROOT, stubs: STUBS, ui: () => anyModule() });
  *   const store = load("B06_Section", "B06_Section_Section_Store.ts");
  *
- * 풀이 순서: 카탈로그 · STUBS · @config(가짜 주소) · @ui(`ui` 쪽 값 · 기본 showToast) · .css · .json · @util · 상대 경로 · node.
+ * 풀이 순서(기본): 카탈로그 · STUBS · @config(가짜 주소) · @ui(`ui` 쪽 값 · 기본 showToast) · .css · .json · @util · 상대 경로 · node.
  */
 const fs = require("fs");
 const path = require("path");
@@ -28,16 +28,23 @@ function memoryStorage() {
   };
 }
 
-function makeLoader({ root, stubs = {}, ui = () => ({ showToast: () => undefined }) }) {
+/* 옵션 — 옮겨 온 옛 헬퍼가 저마다 달리 쓰던 것(헬퍼 동작 그대로).
+ *   requireFor(full) 풀이 함수를 헬퍼가 직접 지음(기본 풀이 대신) · 인자 없으면 진짜 require
+ *   interop        esModuleInterop 로 트랜스파일
+ *   cache:false    같은 파일을 부를 때마다 새로 읽음(기본은 한 번만)
+ *   fileStub(full) 파일 경로로 통째 대신할 값(없으면 undefined) */
+function makeLoader({
+  root,
+  stubs = {},
+  ui = () => ({ showToast: () => undefined }),
+  requireFor,
+  interop = false,
+  cache: useCache = true,
+  fileStub,
+}) {
   const cache = new Map();
-  function loadTs(full) {
-    if (cache.has(full)) return cache.get(full);
-    const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
-      compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
-    }).outputText;
-    const box = { exports: {} };
-    cache.set(full, box.exports);
-    const localRequire = (request) => {
+  function defaultRequire(full) {
+    return (request) => {
       if (CATALOG.isCatalogRequest(request)) return CATALOG;
       const key = Object.keys(stubs).find((name) => request.endsWith(name));
       if (key) return stubs[key];
@@ -50,7 +57,25 @@ function makeLoader({ root, stubs = {}, ui = () => ({ showToast: () => undefined
       if (request.startsWith(".")) return loadTs(path.join(path.dirname(full), `${request}.ts`));
       return require(request);
     };
+  }
+  function loadTs(file) {
+    const full = path.resolve(file);
+    if (useCache && cache.has(full)) return cache.get(full);
+    const stub = fileStub && fileStub(full);
+    if (stub) return stub;
+    if (full.endsWith(".json")) {
+      const data = JSON.parse(fs.readFileSync(full, "utf8"));
+      if (useCache) cache.set(full, data);
+      return data;
+    }
+    const compilerOptions = { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 };
+    if (interop) compilerOptions.esModuleInterop = true;
+    const js = ts.transpileModule(fs.readFileSync(full, "utf8"), { compilerOptions }).outputText;
+    const box = { exports: {} };
+    if (useCache) cache.set(full, box.exports);
+    const localRequire = requireFor ? requireFor(full) : defaultRequire(full);
     new Function("exports", "module", "require", js)(box.exports, box, localRequire);
+    if (useCache) cache.set(full, box.exports);
     return box.exports;
   }
   return { loadTs, load: (...parts) => loadTs(path.join(root, ...parts)) };