chore: add more type annotations (#358)

1 files changed, 6 insertions, 6 deletions

diff --git a/src/system.ts b/src/system.ts
index 564069f3..063941f0 100644
--- a/src/system.ts
+++ b/src/system.ts
@@ -47,7 +47,7 @@ export class System {
    * @example
    * faker.system.fileName() // 'self_enabling_accountability_toys.kpt'
    */
-  fileName() {
+  fileName(): string {
     let str = this.faker.random.words();
     str =
       str.toLowerCase().replace(/\W/g, '_') + '.' + this.faker.system.fileExt();
@@ -75,7 +75,7 @@ export class System {
    * @example
    * faker.system.mimeType() // 'video/vnd.vivo'
    */
-  mimeType() {
+  mimeType(): string {
     const typeSet = new Set<string>();
     const extensionSet = new Set();
     const mimeTypes = this.faker.definitions.system.mimeTypes;
@@ -105,7 +105,7 @@ export class System {
    * @example
    * faker.system.commonFileType() // 'audio'
    */
-  commonFileType() {
+  commonFileType(): string {
     return this.faker.random.arrayElement(commonFileTypes);
   }
 
@@ -115,7 +115,7 @@ export class System {
    * @example
    * faker.system.commonFileExt() // 'gif'
    */
-  commonFileExt() {
+  commonFileExt(): string {
     return this.faker.system.fileExt(
       this.faker.random.arrayElement(commonMimeTypes)
     );
@@ -127,7 +127,7 @@ export class System {
    * @example
    * faker.system.fileType() // 'message'
    */
-  fileType() {
+  fileType(): string {
     const typeSet = new Set<string>();
     const extensionSet = new Set();
     const mimeTypes = this.faker.definitions.system.mimeTypes;
@@ -205,7 +205,7 @@ export class System {
    * @example
    * faker.system.filePath() // '/usr/local/src/money.rmp.dotx'
    */
-  filePath() {
+  filePath(): string {
     return this.faker.fake(
       '{{system.directoryPath}}/{{system.fileName}}.{{system.fileExt}}'
     );