diff --git a/.vscode/launch.json b/.vscode/launch.json
index f952bfb..cd3e996 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -4,19 +4,6 @@
     // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
-        {
-            "type": "node",
-            "request": "launch",
-            "name": "Lexador JSON",
-            "skipFiles": ["<node_internals>/**", "node_modules/**"],
-            "cwd": "${workspaceRoot}",
-            "console": "integratedTerminal",
-            "args": [
-                "${workspaceFolder}${pathSeparator}teste-json.ts"
-            ],
-            "runtimeExecutable": "node",
-            "runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"]
-        },
         {
             "type": "node",
             "request": "launch",
@@ -466,15 +453,28 @@
         {
             "type": "node",
             "request": "launch",
-            "name": "Portugol IPT > Olá mundo",
+            "name": "Lexador JSON",
+            "skipFiles": ["<node_internals>/**", "node_modules/**"],
+            "cwd": "${workspaceRoot}",
+            "console": "integratedTerminal",
+            "args": [
+                "${workspaceFolder}${pathSeparator}teste-json.ts"
+            ],
+            "runtimeExecutable": "node",
+            "runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"]
+        },
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Mapler > Olá Mundo",
             "skipFiles": ["<node_internals>/**", "node_modules/**"],
             "cwd": "${workspaceRoot}",
             "console": "integratedTerminal",
             "args": [
                 "${workspaceFolder}${pathSeparator}execucao.ts",
                 "--dialeto",
-                "portugol-ipt",
-                "./exemplos/dialetos/portugol-ipt/ola-mundo.alg"
+                "mapler",
+                "./exemplos/dialetos/mapler/ola-mundo.mapler"
             ],
             "runtimeExecutable": "node",
             "runtimeArgs": [
@@ -486,15 +486,15 @@
         {
             "type": "node",
             "request": "launch",
-            "name": "Portugol Studio > Número digitado",
+            "name": "Portugol IPT > Olá mundo",
             "skipFiles": ["<node_internals>/**", "node_modules/**"],
             "cwd": "${workspaceRoot}",
             "console": "integratedTerminal",
             "args": [
                 "${workspaceFolder}${pathSeparator}execucao.ts",
                 "--dialeto",
-                "portugol-studio",
-                "./exemplos/dialetos/portugol-studio/numero-digitado.por"
+                "portugol-ipt",
+                "./exemplos/dialetos/portugol-ipt/ola-mundo.alg"
             ],
             "runtimeExecutable": "node",
             "runtimeArgs": [
@@ -506,7 +506,7 @@
         {
             "type": "node",
             "request": "launch",
-            "name": "Portugol Studio > Olá mundo",
+            "name": "Portugol Studio > Número digitado",
             "skipFiles": ["<node_internals>/**", "node_modules/**"],
             "cwd": "${workspaceRoot}",
             "console": "integratedTerminal",
@@ -514,7 +514,7 @@
                 "${workspaceFolder}${pathSeparator}execucao.ts",
                 "--dialeto",
                 "portugol-studio",
-                "./exemplos/dialetos/portugol-studio/ola-mundo.por"
+                "./exemplos/dialetos/portugol-studio/numero-digitado.por"
             ],
             "runtimeExecutable": "node",
             "runtimeArgs": [
@@ -526,15 +526,15 @@
         {
             "type": "node",
             "request": "launch",
-            "name": "Mapler > Olá Mundo",
+            "name": "Portugol Studio > Olá mundo",
             "skipFiles": ["<node_internals>/**", "node_modules/**"],
             "cwd": "${workspaceRoot}",
             "console": "integratedTerminal",
             "args": [
                 "${workspaceFolder}${pathSeparator}execucao.ts",
                 "--dialeto",
-                "mapler",
-                "./exemplos/dialetos/mapler/ola-mundo.mapler"
+                "portugol-studio",
+                "./exemplos/dialetos/portugol-studio/ola-mundo.por"
             ],
             "runtimeExecutable": "node",
             "runtimeArgs": [
@@ -676,6 +676,22 @@
             "runtimeExecutable": "node",
             "runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"]
         },
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "VisuAlg > Negativos",
+            "skipFiles": ["<node_internals>/**", "node_modules/**"],
+            "cwd": "${workspaceRoot}",
+            "console": "integratedTerminal",
+            "args": [
+                "${workspaceFolder}${pathSeparator}execucao.ts",
+                "--dialeto",
+                "visualg",
+                "./exemplos/dialetos/visualg/negativos.alg"
+            ],
+            "runtimeExecutable": "node",
+            "runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"]
+        },
         {
             "type": "node",
             "request": "launch",
diff --git a/execucao.ts b/execucao.ts
index 6fa7c2d..e8ec610 100644
--- a/execucao.ts
+++ b/execucao.ts
@@ -4,7 +4,7 @@ import { Command } from 'commander';
 const principal = async () => {
     const analisadorArgumentos = new Command();
     analisadorArgumentos;
-    let codigoOuNomeArquivo: string;
+    let codigoOuNomeArquivo: string | undefined = undefined;
 
     analisadorArgumentos
         .helpOption('-h, --ajuda', 'Exibe a ajuda para o comando.')
diff --git a/exemplos/dialetos/visualg/negativos.alg b/exemplos/dialetos/visualg/negativos.alg
new file mode 100644
index 0000000..7849468
--- /dev/null
+++ b/exemplos/dialetos/visualg/negativos.alg
@@ -0,0 +1,27 @@
+algoritmo "negativos"
+
+var
+
+  n, i: inteiro
+  vet: vetor [0..9] de inteiro
+    
+inicio
+
+  escreval("Quantos numeros voce vai digitar? ")
+  leia(n)
+
+  para i de 0 ate n-1 faca
+    escreval("Digite um numero: ")
+    leia(vet[i])
+  fimpara
+
+  escreval(" ")
+  escreval("NUMEROS NEGATIVOS")
+
+   para i de 0 ate n-1 faca
+    se (vet[i] < 0) entao
+      escreval(vet[i])
+     fimse
+  fimpara
+
+fimalgoritmo
\ No newline at end of file
diff --git a/fontes/delegua.ts b/fontes/delegua.ts
index eb24208..2f62275 100644
--- a/fontes/delegua.ts
+++ b/fontes/delegua.ts
@@ -17,16 +17,16 @@ import { NucleoTraducao } from './nucleo-traducao';
  * correspondente à operação solicitada e observar a execução.
  */
 export class Delegua implements DeleguaInterface {
-    lexador: LexadorInterface<any>;
-    avaliadorSintatico: AvaliadorSintaticoInterface<any, any>;
-    importador: ImportadorInterface<any, any>;
+    lexador: LexadorInterface<any> | undefined;
+    avaliadorSintatico: AvaliadorSintaticoInterface<any, any> | undefined;
+    importador: ImportadorInterface<any, any> | undefined;
 
     funcaoDeRetorno: Function;
     funcaoDeRetornoMesmaLinha: Function;
 
     constructor(
-        funcaoDeRetorno: Function = null,
-        funcaoDeRetornoMesmaLinha: Function = null
+        funcaoDeRetorno?: Function,
+        funcaoDeRetornoMesmaLinha?: Function
     ) {
         this.funcaoDeRetorno = funcaoDeRetorno || console.log;
         // `process.stdout.write.bind(process.stdout)` é necessário por causa de 
diff --git a/package.json b/package.json
index 08047a7..39b809b 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
         "testes:servidor-depuracao": "ts-node ./fontes/depuracao/servidor-depuracao.ts"
     },
     "dependencies": {
-        "@designliquido/delegua": "0.25.12",
+        "@designliquido/delegua": "0.25.13",
         "chalk": "4.1.2",
         "commander": "^9.4.1",
         "json-colorizer": "^2.2.2",
diff --git a/tsconfig.json b/tsconfig.json
index 4e4cf6a..b598d96 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,8 +3,10 @@
         "outDir": "dist",
         "module": "CommonJS",
         "target": "es2017",
+        "mapRoot": "dist",
         "rootDir": ".",
-        "allowJs": true,
+        "strict": false,
+        "allowJs": false,
         "sourceMap": true,
         "declaration": true,
         "esModuleInterop": true,
diff --git a/yarn.lock b/yarn.lock
index adfe106..3dfa6eb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -337,10 +337,10 @@
   resolved "https://registry.yarnpkg.com/@designliquido/delegua-tempo/-/delegua-tempo-0.0.1.tgz#964834d127354857cda1c388f5de9327735b6747"
   integrity sha512-/O1/eXlTXPTWSZGZ862i6uHHKCW0cmP6KnOV29zK4d4hgn03QjcNDeFKVC9L9vz3OJ6pPY0d/S8ANJkgBnnoaQ==
 
-"@designliquido/delegua@0.25.12":
-  version "0.25.12"
-  resolved "https://registry.yarnpkg.com/@designliquido/delegua/-/delegua-0.25.12.tgz#cb76ac0ff7305f3438ea118b6d47cf64de1a5a7d"
-  integrity sha512-/pIPBJX+1cu9bSb88q8sHEs5TWUhVA6L/B//up4avgSc2tjmzhTR3sWKWg+hjTtrqTDgmhdsSzA2//arObJj3Q==
+"@designliquido/delegua@0.25.13":
+  version "0.25.13"
+  resolved "https://registry.yarnpkg.com/@designliquido/delegua/-/delegua-0.25.13.tgz#02cb5e371b08c0025f42833969a5e2fcb51b19b2"
+  integrity sha512-kKdZenbNODJ9iqiBhoXoxiSgSozh/mSK+uKIBGYpl7mR1T8sG/eqIBaik2qDtrOiBp6tngHKVArVZ4qVut/dzA==
   dependencies:
     antlr4ts "^0.5.0-alpha.4"
     browser-process-hrtime "^1.0.0"