fix: single quote conversion issue

packages/rust/src/generators/add-napi/generator.spec.ts

@@ -26,26 +26,20 @@ describe('add-napi generator', () => {
     await generator(appTree, options);
     const cargoString = appTree.read('./test/Cargo.toml')?.toString() ?? '';
     expect(cargoString).toMatchInlineSnapshot(`
-      "
-      [package]
-      name = 'test'
-      version = '0.1.0'
-      edition = '2021'
+      "[package]
+      name = \\"test\\"
+      version = \\"0.1.0\\"
+      edition = \\"2021\\"
 
       [dependencies]
-      napi = { version = '2.10.2', default-features = false, features = [
-      	'napi4',
-      ] }
-      napi-derive = '2.9.3'
+      napi = { version = \\"2.10.2\\", default-features = false, features = [\\"napi4\\"] }
+      napi-derive = \\"2.9.3\\"
 
       [lib]
-      crate-type = [
-      	'cdylib',
-      ]
+      crate-type = [\\"cdylib\\"]
 
       [build-dependencies]
-      napi-build = '2.0.1'
-      "
+      napi-build = \\"2.0.1\\""
     `);
   });
 

packages/rust/src/generators/add-wasm/generator.spec.ts

@@ -47,34 +47,28 @@ describe('add-wasm generator', () => {
 
     const cargoString = appTree.read('./test_lib/Cargo.toml')?.toString() ?? '';
     expect(cargoString).toMatchInlineSnapshot(`
-      "
-      [package]
-      name = 'test_lib'
-      version = '0.1.0'
-      edition = '2021'
+      "[package]
+      name = \\"test_lib\\"
+      version = \\"0.1.0\\"
+      edition = \\"2021\\"
 
       [dependencies]
-      wasm-bindgen = '0.2'
-      console_error_panic_hook = { version = '0.1.6', optional = true }
-      wee_alloc = { version = '0.4', optional = true }
+      wasm-bindgen = \\"0.2\\"
+      console_error_panic_hook = { version = \\"0.1.6\\", optional = true }
+      wee_alloc = { version = \\"0.4\\", optional = true }
 
       [lib]
-      crate-type = [
-      	'cdylib',
-      	'rlib',
-      ]
+      crate-type = [\\"cdylib\\", \\"rlib\\"]
 
       [feature]
-      default = [
-      	'console_error_panic_hook',
-      ]
+      default = [\\"console_error_panic_hook\\"]
 
       [dev-dependencies]
-      wasm-bindgen-test = '0.3'
+      wasm-bindgen-test = \\"0.3\\"
 
+      [profile]
       [profile.release]
-      opt-level = 's' #Tell \`rustc\` to optimize for small code size.
-      "
+      opt-level = \\"s\\""
     `);
   });
 
@@ -104,38 +98,30 @@ describe('add-wasm generator', () => {
 
     const cargoString = appTree.read('./test_lib/Cargo.toml')?.toString() ?? '';
     expect(cargoString).toMatchInlineSnapshot(`
-      "
-      [package]
-      name = 'test_lib'
-      version = '0.1.0'
-      edition = '2021'
+      "[package]
+      name = \\"test_lib\\"
+      version = \\"0.1.0\\"
+      edition = \\"2021\\"
 
       [dependencies]
-      wasm-bindgen = '0.2'
-      js-sys = '0.3'
-      web-sys = { version = '0.3', features = [
-      	'Window',
-      ] }
-      console_error_panic_hook = { version = '0.1.6', optional = true }
-      wee_alloc = { version = '0.4', optional = true }
+      wasm-bindgen = \\"0.2\\"
+      js-sys = \\"0.3\\"
+      web-sys = { version = \\"0.3\\", features = [\\"Window\\"] }
+      console_error_panic_hook = { version = \\"0.1.6\\", optional = true }
+      wee_alloc = { version = \\"0.4\\", optional = true }
 
       [lib]
-      crate-type = [
-      	'cdylib',
-      	'rlib',
-      ]
+      crate-type = [\\"cdylib\\", \\"rlib\\"]
 
       [feature]
-      default = [
-      	'console_error_panic_hook',
-      ]
+      default = [\\"console_error_panic_hook\\"]
 
       [dev-dependencies]
-      wasm-bindgen-test = '0.3'
+      wasm-bindgen-test = \\"0.3\\"
 
+      [profile]
       [profile.release]
-      opt-level = 's' #Tell \`rustc\` to optimize for small code size.
-      "
+      opt-level = \\"s\\""
     `);
   });
 });

packages/rust/src/utils/toml.ts

@@ -2,6 +2,18 @@ import TOML from '@ltd/j-toml';
 import { Tree, logger } from '@nx/devkit';
 import { CargoToml } from '../models/cargo.toml';
 
+type TOMLBasicString = ReturnType<typeof TOML.basic>;
+type TOMLValue =
+  | string
+  | number
+  | boolean
+  | Date
+  | TOMLArray
+  | TOMLTable
+  | TOMLBasicString;
+type TOMLArray = TOMLValue[];
+type TOMLTable = { [key: string]: TOMLValue };
+
 export function parseCargoTomlWithTree(
   tree: Tree,
   projectRoot: string,
@@ -22,16 +34,44 @@ export function parseCargoToml(cargoString: string) {
   }) as unknown as CargoToml;
 }
 
-export function stringifyCargoToml(cargoToml: CargoToml) {
-  const tomlString = TOML.stringify(cargoToml, {
-    newlineAround: 'section',
-  });
+export function stringifyCargoToml(cargoToml: CargoToml): string {
+  function isTable(value: TOMLValue): value is TOMLTable {
+    return typeof value === 'object' && value !== null && !Array.isArray(value) && !(value instanceof Date);
+  }
+
+  function formatValue(value: TOMLValue): string {
+    if (typeof value === 'string') {
+      return value.includes('"') ? `'${value}'` : `"${value}"`;
+    } else if (Array.isArray(value)) {
+      return `[${value.map(formatValue).join(', ')}]`;
+    } else if (isTable(value)) {
+      if (TOML.isInline(value)) {
+        return `{ ${Object.entries(value).map(([k, v]) => `${k} = ${formatValue(v)}`).join(', ')} }`;
+      } else {
+        return '';
+      }
+    } else {
+      return String(value);
+    }
+  }
 
-  if (Array.isArray(tomlString)) {
-    return tomlString.join('\n');
+  function stringifyTable(table: TOMLTable, prefix: string = ''): string[] {
+    const lines: string[] = [];
+    for (const [key, value] of Object.entries(table)) {
+      if (isTable(value) && !TOML.isInline(value)) {
+        if (lines.length > 0) lines.push('');
+        const fullKey = prefix ? `${prefix}.${key}` : key;
+        lines.push(`[${fullKey}]`);
+        lines.push(...stringifyTable(value, fullKey));
+      } else {
+        lines.push(`${key} = ${formatValue(value)}`);
+      }
+    }
+    return lines;
   }
 
-  return tomlString;
+  const tomlLines = stringifyTable(cargoToml);
+  return tomlLines.join('\n');
 }
 
 export function modifyCargoTable(