[typescript] Clean up modelPropertyNaming across generators (#5427)

* [typescript] Clean up modelPropertyNaming across generators
Fixes https://github.com/OpenAPITools/openapi-generator/issues/2976

Generators without runtime models conversion use "original" property naming by default. It's still possible to change it via cli options

Generators with runtime conversion keep using "camelCase"

* Refactoring: use enum instead of string for modelPropertyNaming

* Restore the original camelCase for var names, decouple it from property names

* Swap toParamName and toVarName logic (looks like I've mistaken them)

* Regenerate docs

* Remove a no longer used private method

docs/generators/javascript-flowtyped.md

@@ -9,7 +9,7 @@ sidebar_label: javascript-flowtyped
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
 |enumNameSuffix|Suffix that will be appended to all enum names. A special 'v4-compat' value enables the backward-compatible behavior (as pre v4.2.3)| |v4-compat|
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |PascalCase|
-|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |camelCase|
+|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name. Only change it if you provide your own run-time code for (de-)serialization of models| |original|
 |npmName|The name under which you want to publish generated npm package. Required to generate a full package| |null|
 |npmRepository|Use this property to set an url your private npmRepo in the package.json| |null|
 |npmVersion|The version of your npm package. If not provided, using the version from the OpenAPI specification file.| |1.0.0|

docs/generators/typescript-angular.md

@@ -12,7 +12,7 @@ sidebar_label: typescript-angular
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |PascalCase|
 |fileNaming|Naming convention for the output files: 'camelCase', 'kebab-case'.| |camelCase|
 |modelFileSuffix|The suffix of the file of the generated model (model<suffix>.ts).| |null|
-|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |camelCase|
+|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name. Only change it if you provide your own run-time code for (de-)serialization of models| |original|
 |modelSuffix|The suffix of the generated model.| |null|
 |ngVersion|The version of Angular.| |9.0.0|
 |npmName|The name under which you want to publish generated npm package. Required to generate a full package| |null|

docs/generators/typescript-angularjs.md

@@ -9,7 +9,7 @@ sidebar_label: typescript-angularjs
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
 |enumNameSuffix|Suffix that will be appended to all enum names. A special 'v4-compat' value enables the backward-compatible behavior (as pre v4.2.3)| |v4-compat|
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |PascalCase|
-|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |camelCase|
+|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name. Only change it if you provide your own run-time code for (de-)serialization of models| |original|
 |nullSafeAdditionalProps|Set to make additional properties types declare that their indexer may return undefined| |false|
 |prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|

docs/generators/typescript-aurelia.md

@@ -9,7 +9,7 @@ sidebar_label: typescript-aurelia
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
 |enumNameSuffix|Suffix that will be appended to all enum names. A special 'v4-compat' value enables the backward-compatible behavior (as pre v4.2.3)| |v4-compat|
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |PascalCase|
-|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |camelCase|
+|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name. Only change it if you provide your own run-time code for (de-)serialization of models| |original|
 |npmName|The name under which you want to publish generated npm package. Required to generate a full package| |null|
 |npmVersion|The version of your npm package. If not provided, using the version from the OpenAPI specification file.| |1.0.0|
 |nullSafeAdditionalProps|Set to make additional properties types declare that their indexer may return undefined| |false|

docs/generators/typescript-axios.md

@@ -9,7 +9,7 @@ sidebar_label: typescript-axios
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
 |enumNameSuffix|Suffix that will be appended to all enum names. A special 'v4-compat' value enables the backward-compatible behavior (as pre v4.2.3)| |v4-compat|
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |PascalCase|
-|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |camelCase|
+|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name. Only change it if you provide your own run-time code for (de-)serialization of models| |original|
 |npmName|The name under which you want to publish generated npm package. Required to generate a full package| |null|
 |npmRepository|Use this property to set an url of your private npmRepo in the package.json| |null|
 |npmVersion|The version of your npm package. If not provided, using the version from the OpenAPI specification file.| |1.0.0|

docs/generators/typescript-inversify.md

@@ -9,7 +9,7 @@ sidebar_label: typescript-inversify
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
 |enumNameSuffix|Suffix that will be appended to all enum names. A special 'v4-compat' value enables the backward-compatible behavior (as pre v4.2.3)| |v4-compat|
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |PascalCase|
-|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |camelCase|
+|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name. Only change it if you provide your own run-time code for (de-)serialization of models| |original|
 |npmName|The name under which you want to publish generated npm package. Required to generate a full package| |null|
 |npmRepository|Use this property to set an url your private npmRepo in the package.json| |null|
 |npmVersion|The version of your npm package. If not provided, using the version from the OpenAPI specification file.| |1.0.0|

docs/generators/typescript-jquery.md

@@ -10,7 +10,7 @@ sidebar_label: typescript-jquery
 |enumNameSuffix|Suffix that will be appended to all enum names. A special 'v4-compat' value enables the backward-compatible behavior (as pre v4.2.3)| |v4-compat|
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |PascalCase|
 |jqueryAlreadyImported|When using this in legacy app using mix of typescript and javascript, this will only declare jquery and not import it| |false|
-|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |camelCase|
+|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name. Only change it if you provide your own run-time code for (de-)serialization of models| |original|
 |npmName|The name under which you want to publish generated npm package. Required to generate a full package| |null|
 |npmRepository|Use this property to set an url your private npmRepo in the package.json| |null|
 |npmVersion|The version of your npm package. If not provided, using the version from the OpenAPI specification file.| |1.0.0|

docs/generators/typescript-rxjs.md

@@ -9,7 +9,7 @@ sidebar_label: typescript-rxjs
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
 |enumNameSuffix|Suffix that will be appended to all enum names. A special 'v4-compat' value enables the backward-compatible behavior (as pre v4.2.3)| |v4-compat|
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |PascalCase|
-|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |camelCase|
+|modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name. Only change it if you provide your own run-time code for (de-)serialization of models| |original|
 |npmName|The name under which you want to publish generated npm package. Required to generate a full package| |null|
 |npmRepository|Use this property to set an url your private npmRepo in the package.json| |null|
 |npmVersion|The version of your npm package. If not provided, using the version from the OpenAPI specification file.| |1.0.0|

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractTypeScriptClientCodegen.java

@@ -25,6 +25,7 @@ import io.swagger.v3.oas.models.parameters.Parameter;
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.CodegenConstants.ENUM_PROPERTY_NAMING_TYPE;
+import org.openapitools.codegen.CodegenConstants.MODEL_PROPERTY_NAMING_TYPE;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.utils.ModelUtils;
@@ -55,6 +56,9 @@ public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen imp
     public static final String ENUM_NAME_SUFFIX_DESC_CUSTOMIZED = CodegenConstants.ENUM_NAME_SUFFIX_DESC
             + " A special '" + ENUM_NAME_SUFFIX_V4_COMPAT + "' value enables the backward-compatible behavior (as pre v4.2.3)";
 
+    public static final String MODEL_PROPERTY_NAMING_DESC_WITH_WARNING = CodegenConstants.MODEL_PROPERTY_NAMING_DESC
+            + ". Only change it if you provide your own run-time code for (de-)serialization of models";
+
     public static final String NULL_SAFE_ADDITIONAL_PROPS = "nullSafeAdditionalProps";
     public static final String NULL_SAFE_ADDITIONAL_PROPS_DESC = "Set to make additional properties types declare that their indexer may return undefined";
 
@@ -62,7 +66,7 @@ public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen imp
     @SuppressWarnings("squid:S5164")
     protected static final ThreadLocal<SimpleDateFormat> SNAPSHOT_SUFFIX_FORMAT = ThreadLocal.withInitial(() -> new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT));
 
-    protected String modelPropertyNaming = "camelCase";
+    protected MODEL_PROPERTY_NAMING_TYPE modelPropertyNaming = MODEL_PROPERTY_NAMING_TYPE.original;
     protected ENUM_PROPERTY_NAMING_TYPE enumPropertyNaming = ENUM_PROPERTY_NAMING_TYPE.PascalCase;
     protected Boolean supportsES6 = false;
     protected Boolean nullSafeAdditionalProps = false;
@@ -170,7 +174,7 @@ public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen imp
 
         cliOptions.add(new CliOption(CodegenConstants.ENUM_NAME_SUFFIX, ENUM_NAME_SUFFIX_DESC_CUSTOMIZED).defaultValue(this.enumSuffix));
         cliOptions.add(new CliOption(CodegenConstants.ENUM_PROPERTY_NAMING, CodegenConstants.ENUM_PROPERTY_NAMING_DESC).defaultValue(this.enumPropertyNaming.name()));
-        cliOptions.add(new CliOption(CodegenConstants.MODEL_PROPERTY_NAMING, CodegenConstants.MODEL_PROPERTY_NAMING_DESC).defaultValue(this.modelPropertyNaming));
+        cliOptions.add(new CliOption(CodegenConstants.MODEL_PROPERTY_NAMING, MODEL_PROPERTY_NAMING_DESC_WITH_WARNING).defaultValue(this.modelPropertyNaming.name()));
         cliOptions.add(new CliOption(CodegenConstants.SUPPORTS_ES6, CodegenConstants.SUPPORTS_ES6_DESC).defaultValue(String.valueOf(this.getSupportsES6())));
         this.cliOptions.add(new CliOption(NPM_NAME, "The name under which you want to publish generated npm package." +
                 " Required to generate a full package"));
@@ -179,7 +183,12 @@ public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen imp
                 "When setting this property to true, the version will be suffixed with -SNAPSHOT." + this.SNAPSHOT_SUFFIX_FORMAT.get().toPattern(),
                 false));
         this.cliOptions.add(new CliOption(NULL_SAFE_ADDITIONAL_PROPS, NULL_SAFE_ADDITIONAL_PROPS_DESC).defaultValue(String.valueOf(this.getNullSafeAdditionalProps())));
+    }
 
+    protected void supportModelPropertyNaming(MODEL_PROPERTY_NAMING_TYPE defaultModelPropertyNaming) {
+        removeOption(CodegenConstants.MODEL_PROPERTY_NAMING);
+        modelPropertyNaming = defaultModelPropertyNaming;
+        cliOptions.add(new CliOption(CodegenConstants.MODEL_PROPERTY_NAMING, CodegenConstants.MODEL_PROPERTY_NAMING_DESC).defaultValue(modelPropertyNaming.name()));
     }
 
     @Override
@@ -274,52 +283,37 @@ public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen imp
 
     @Override
     public String toParamName(String name) {
-        // sanitize name
         name = sanitizeName(name, "[^\\w$]");
 
         if ("_".equals(name)) {
             name = "_u";
         }
 
-        // if it's all uppper case, do nothing
-        if (name.matches("^[A-Z_]*$")) {
-            return name;
-        }
-
-        name = getNameUsingModelPropertyNaming(name);
-
-        // for reserved word or word starting with number, append _
-        if (isReservedWord(name) || name.matches("^\\d.*")) {
-            name = escapeReservedWord(name);
-        }
+        name = camelize(name, true);
+        name = toSafeIdentifier(name);
 
         return name;
     }
 
     @Override
     public String toVarName(String name) {
-        name = this.toParamName(name);
-        
-        // if the property name has any breaking characters such as :, ;, . etc.
-        // then wrap the name within single quotes.
-        // my:interface:property: string; => 'my:interface:property': string;
-        if (propertyHasBreakingCharacters(name)) {
-            name = "\'" + name + "\'";
+        name = sanitizeName(name, "[^\\w$]");
+
+        if ("_".equals(name)) {
+            name = "_u";
         }
 
+        name = getNameUsingModelPropertyNaming(name);
+        name = toSafeIdentifier(name);
+
         return name;
     }
 
-    /**
-     * Checks whether property names have breaking characters like ':', '-'.
-     * @param str string to check for breaking characters
-     * @return <code>true</code> if breaking characters are present and <code>false</code> if not
-     */
-    private boolean propertyHasBreakingCharacters(String str) {
-        final String regex = "^.*[+*:;,.()-]+.*$";
-        final Pattern pattern = Pattern.compile(regex);
-        final Matcher matcher = pattern.matcher(str);
-        return matcher.matches();
+    private String toSafeIdentifier(String name) {
+        if (isReservedWord(name) || name.matches("^\\d.*")) {
+            name = escapeReservedWord(name);
+        }
+        return name;
     }
 
     @Override
@@ -533,32 +527,31 @@ public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen imp
             throw new RuntimeException("Empty method name (operationId) not allowed");
         }
 
-        // method name cannot use reserved keyword or word starting with number, e.g. return or 123return
-        // append _ at the beginning, e.g. _return or _123return
-        if (isReservedWord(operationId) || operationId.matches("^\\d.*")) {
-            return escapeReservedWord(camelize(sanitizeName(operationId), true));
-        }
+        operationId = camelize(sanitizeName(operationId), true);
+        operationId = toSafeIdentifier(operationId);
 
-        return camelize(sanitizeName(operationId), true);
+        return operationId;
     }
 
     public void setModelPropertyNaming(String naming) {
-        if ("original".equals(naming) || "camelCase".equals(naming) ||
-                "PascalCase".equals(naming) || "snake_case".equals(naming)) {
-            this.modelPropertyNaming = naming;
-        } else {
-            throw new IllegalArgumentException("Invalid model property naming '" +
-                    naming + "'. Must be 'original', 'camelCase', " +
-                    "'PascalCase' or 'snake_case'");
+        try {
+            modelPropertyNaming = MODEL_PROPERTY_NAMING_TYPE.valueOf(naming);
+        } catch (IllegalArgumentException e) {
+            String values = Stream.of(MODEL_PROPERTY_NAMING_TYPE.values())
+                    .map(value -> "'" + value.name() + "'")
+                    .collect(Collectors.joining(", "));
+
+            String msg = String.format(Locale.ROOT, "Invalid model property naming '%s'. Must be one of %s.", naming, values);
+            throw new IllegalArgumentException(msg);
         }
     }
 
-    public String getModelPropertyNaming() {
-        return this.modelPropertyNaming;
+    public MODEL_PROPERTY_NAMING_TYPE getModelPropertyNaming() {
+        return modelPropertyNaming;
     }
 
     private String getNameUsingModelPropertyNaming(String name) {
-        switch (CodegenConstants.MODEL_PROPERTY_NAMING_TYPE.valueOf(getModelPropertyNaming())) {
+        switch (getModelPropertyNaming()) {
             case original:
                 return name;
             case camelCase:

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAngularClientCodegen.java

@@ -456,7 +456,7 @@ public class TypeScriptAngularClientCodegen extends AbstractTypeScriptClientCode
 
                         // Add the more complicated component instead of just the brace.
                         CodegenParameter parameter = findPathParameterByName(op, parameterName.toString());
-                        pathBuffer.append(toVarName(parameterName.toString()));
+                        pathBuffer.append(toParamName(parameterName.toString()));
                         if (parameter != null && parameter.isDateTime) {
                             pathBuffer.append(".toISOString()");
                         }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java

@@ -66,6 +66,7 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         typeMapping.put("date", "Date");
         typeMapping.put("DateTime", "Date");
 
+        supportModelPropertyNaming(CodegenConstants.MODEL_PROPERTY_NAMING_TYPE.camelCase);
         this.cliOptions.add(new CliOption(NPM_REPOSITORY, "Use this property to set an url your private npmRepo in the package.json"));
         this.cliOptions.add(new CliOption(WITH_INTERFACES, "Setting this property to true will generate interfaces next to the default class implementations.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
         this.cliOptions.add(new CliOption(USE_SINGLE_REQUEST_PARAMETER, "Setting this property to true will generate functions with a single argument containing all API endpoint parameters instead of one argument per parameter.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.TRUE.toString()));
@@ -102,8 +103,8 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
     @Override
     public void processOpts() {
         super.processOpts();
-        additionalProperties.put("isOriginalModelPropertyNaming", getModelPropertyNaming().equals("original"));
-        additionalProperties.put("modelPropertyNaming", getModelPropertyNaming());
+        additionalProperties.put("isOriginalModelPropertyNaming", getModelPropertyNaming() == CodegenConstants.MODEL_PROPERTY_NAMING_TYPE.original);
+        additionalProperties.put("modelPropertyNaming", getModelPropertyNaming().name());
 
         String sourceDir = "";
         if (additionalProperties.containsKey(NPM_NAME)) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptInversifyClientCodegen.java

@@ -225,7 +225,7 @@ public class TypeScriptInversifyClientCodegen extends AbstractTypeScriptClientCo
                         insideCurly--;
 
                         // Add the more complicated component instead of just the brace.
-                        pathBuffer.append(toVarName(parameterName.toString()));
+                        pathBuffer.append(toParamName(parameterName.toString()));
                         pathBuffer.append("))}");
                         parameterName.setLength(0);
                         break;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptNodeClientCodegen.java

@@ -64,6 +64,7 @@ public class TypeScriptNodeClientCodegen extends AbstractTypeScriptClientCodegen
         modelPackage = "model";
         apiPackage = "api";
 
+        supportModelPropertyNaming(CodegenConstants.MODEL_PROPERTY_NAMING_TYPE.camelCase);
         this.cliOptions.add(new CliOption(NPM_REPOSITORY, "Use this property to set an url your private npmRepo in the package.json"));
 
     }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptReduxQueryClientCodegen.java

@@ -61,6 +61,7 @@ public class TypeScriptReduxQueryClientCodegen extends AbstractTypeScriptClientC
         typeMapping.put("date", "Date");
         typeMapping.put("DateTime", "Date");
 
+        supportModelPropertyNaming(CodegenConstants.MODEL_PROPERTY_NAMING_TYPE.camelCase);
         this.cliOptions.add(new CliOption(NPM_REPOSITORY, "Use this property to set an url your private npmRepo in the package.json"));
         this.cliOptions.add(new CliOption(WITH_INTERFACES, "Setting this property to true will generate interfaces next to the default class implementations.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
         this.cliOptions.add(new CliOption(USE_SINGLE_REQUEST_PARAMETER, "Setting this property to true will generate functions with a single argument containing all API endpoint parameters instead of one argument per parameter.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.TRUE.toString()));
@@ -87,8 +88,8 @@ public class TypeScriptReduxQueryClientCodegen extends AbstractTypeScriptClientC
     @Override
     public void processOpts() {
         super.processOpts();
-        additionalProperties.put("isOriginalModelPropertyNaming", getModelPropertyNaming().equals("original"));
-        additionalProperties.put("modelPropertyNaming", getModelPropertyNaming());
+        additionalProperties.put("isOriginalModelPropertyNaming", getModelPropertyNaming() == CodegenConstants.MODEL_PROPERTY_NAMING_TYPE.original);
+        additionalProperties.put("modelPropertyNaming", getModelPropertyNaming().name());
         supportingFiles.add(new SupportingFile("index.mustache", "src", "index.ts"));
         supportingFiles.add(new SupportingFile("runtime.mustache", "src", "runtime.ts"));
         supportingFiles.add(new SupportingFile("tsconfig.mustache", "", "tsconfig.json"));

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptRxjsClientCodegen.java

@@ -89,8 +89,6 @@ public class TypeScriptRxjsClientCodegen extends AbstractTypeScriptClientCodegen
     @Override
     public void processOpts() {
         super.processOpts();
-        additionalProperties.put("isOriginalModelPropertyNaming", getModelPropertyNaming().equals("original"));
-        additionalProperties.put("modelPropertyNaming", getModelPropertyNaming());
         supportingFiles.add(new SupportingFile("index.mustache", "", "index.ts"));
         supportingFiles.add(new SupportingFile("runtime.mustache", "", "runtime.ts"));
         supportingFiles.add(new SupportingFile("apis.index.mustache", apiPackage().replace('.', File.separatorChar), "index.ts"));

modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/fetch/TypeScriptFetchClientCodegenTest.java

@@ -1,6 +1,7 @@
 package org.openapitools.codegen.typescript.fetch;
 
 import io.swagger.v3.oas.models.OpenAPI;
+import org.openapitools.codegen.CodegenConstants;
 import org.openapitools.codegen.TestUtils;
 import org.openapitools.codegen.languages.TypeScriptFetchClientCodegen;
 import org.testng.Assert;
@@ -56,4 +57,16 @@ public class TypeScriptFetchClientCodegenTest {
 
     }
 
+    @Test
+    public void toVarName() {
+        TypeScriptFetchClientCodegen codegen = new TypeScriptFetchClientCodegen();
+        codegen.processOpts();
+        Assert.assertEquals(codegen.toVarName("valid_var"), "validVar");
+
+        codegen = new TypeScriptFetchClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.MODEL_PROPERTY_NAMING, "original");
+        codegen.processOpts();
+        Assert.assertEquals(codegen.toVarName("valid_var"), "valid_var");
+    }
+
 }

modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/typescriptangular/TypeScriptAngularClientCodegenTest.java

@@ -18,6 +18,18 @@ import org.testng.annotations.Test;
 
 
 public class TypeScriptAngularClientCodegenTest {
+    @Test
+    public void toVarName() {
+        TypeScriptAngularClientCodegen codegen = new TypeScriptAngularClientCodegen();
+        codegen.processOpts();
+        Assert.assertEquals(codegen.toVarName("valid_var"), "valid_var");
+
+        codegen = new TypeScriptAngularClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.MODEL_PROPERTY_NAMING, "camelCase");
+        codegen.processOpts();
+        Assert.assertEquals(codegen.toVarName("valid_var"), "validVar");
+    }
+
     @Test
     public void toEnumVarName() {
         TypeScriptAngularClientCodegen codegen = new TypeScriptAngularClientCodegen();