fix: name of esModule

src/index.js

@@ -59,10 +59,10 @@ export default function loader(content) {
     this.emitFile(outputPath, content);
   }
 
-  const esModules =
-    typeof options.esModules !== 'undefined' ? options.esModules : true;
+  const esModule =
+    typeof options.esModule !== 'undefined' ? options.esModule : true;
 
-  return `${esModules ? 'export default' : 'module.exports ='} ${publicPath};`;
+  return `${esModule ? 'export default' : 'module.exports ='} ${publicPath};`;
 }
 
 export const raw = true;

test/__snapshots__/esModule-option.test.js.snap

@@ -0,0 +1,19 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`"esModule" option should work with "Boolean" value equal "false": errors 1`] = `Array []`;
+
+exports[`"esModule" option should work with "Boolean" value equal "false": result 1`] = `"9c87cbf3ba33126ffd25ae7f2f6bbafb.png"`;
+
+exports[`"esModule" option should work with "Boolean" value equal "false": warnings 1`] = `Array []`;
+
+exports[`"esModule" option should work with "Boolean" value equal "true": errors 1`] = `Array []`;
+
+exports[`"esModule" option should work with "Boolean" value equal "true": result 1`] = `"9c87cbf3ba33126ffd25ae7f2f6bbafb.png"`;
+
+exports[`"esModule" option should work with "Boolean" value equal "true": warnings 1`] = `Array []`;
+
+exports[`"esModule" option should work without value: errors 1`] = `Array []`;
+
+exports[`"esModule" option should work without value: result 1`] = `"9c87cbf3ba33126ffd25ae7f2f6bbafb.png"`;
+
+exports[`"esModule" option should work without value: warnings 1`] = `Array []`;

test/__snapshots__/validate-options.test.js.snap

@@ -12,9 +12,9 @@ exports[`validate options should throw an error on the "emitFile" option with "t
    -> Enables/Disables emit files (https://github.com/webpack-contrib/file-loader#emitfile)."
 `;
 
-exports[`validate options should throw an error on the "esModules" option with "true" value 1`] = `
+exports[`validate options should throw an error on the "esModule" option with "true" value 1`] = `
 "Invalid options object. File Loader has been initialised using an options object that does not match the API schema.
- - options.esModules should be a boolean."
+ - options.esModule should be a boolean."
 `;
 
 exports[`validate options should throw an error on the "name" option with "true" value 1`] = `

test/validate-options.test.js

@@ -26,7 +26,7 @@ describe('validate options', () => {
       success: [/image\.png/, 'image.png'],
       failure: [true],
     },
-    esModules: {
+    esModule: {
       success: [true, false],
       failure: ['true'],
     },