The package provides a set of naming policies for the system JSON serializer in .NET which are missed or incorrectly implemented.

The snake and kebab policies from that package are a part of System.Text.Json since the moment when this pull request was merged. The code is identical as well except styling.

Camel Case

Rewrites an input string changing the case of each word by lower casing the first and capitalizing the rest. All non letter or digin charactwrs are ignored.

namespace Yoh.Text.Json.NamingPolicies;

public static class JsonNamingPolicies
{
    public static JsonNamingPolicy CamelCase { get; }
}

Input	Output
XMLHttpRequest	xmlHttpRequest
camelCase	camelCase
camelCase	camelCase
snake_case	snakeCase
sNAKE_CASE	snakeCase
kebab-case	kebabCase
kEBAB-CASE	kebabCase
double space	doubleSpace
double__underscore	doubleUnderscore
abc	abc
abC	abC
aBc	aBc
aBC	aBc
aBc	aBc
aBC	abc
abc123def456	abc123def456
abc123Def456	abc123Def456
abc123DEF456	abc123Def456
aBC123DEF456	abc123def456
aBC123def456	abc123def456
abc123def456	abc123def456
ABC	abc
aBC	abc
ABC	abc
ABC def	abcDef

Pascal Case

Rewrites an input string capitalizing each word. All non letter or digin charactwrs are ignored.

namespace Yoh.Text.Json.NamingPolicies;

public static class JsonNamingPolicies
{
    public static JsonNamingPolicy PascalCase { get; }
}

Input	Output
XMLHttpRequest	XmlHttpRequest
camelCase	CamelCase
camelCase	CamelCase
snake_case	SnakeCase
sNAKE_CASE	SnakeCase
kebab-case	KebabCase
kEBAB-CASE	KebabCase
double space	DoubleSpace
double__underscore	DoubleUnderscore
abc	Abc
abC	AbC
aBc	ABc
aBC	ABc
aBc	ABc
aBC	Abc
abc123def456	Abc123def456
abc123Def456	Abc123Def456
abc123DEF456	Abc123Def456
aBC123DEF456	Abc123def456
aBC123def456	Abc123def456
abc123def456	Abc123def456
ABC	Abc
aBC	Abc
ABC	Abc
ABC def	AbcDef

Snake Case

Rewrites an input string changing the case of each word and connecting them using underscores. All non letter or digit characters are ignored.

namespace Yoh.Text.Json.NamingPolicies;

public static class JsonNamingPolicies
{
    public static JsonNamingPolicy SnakeLowerCase { get; }
    public static JsonNamingPolicy SnakeUpperCase { get; }
}

Input	Output (lower case)	Output (upper case)
XMLHttpRequest	xml_http_request	XML_HTTP_REQUEST
camelCase	camel_case	CAMEL_CASE
CamelCase	camel_case	CAMEL_CASE
snake_case	snake_case	SNAKE_CASE
SNAKE_CASE	snake_case	SNAKE_CASE
kebab-case	kebab_case	KEBAB_CASE
KEBAB-CASE	kebab_case	KEBAB_CASE
double space	double_space	DOUBLE_SPACE
double__underscore	double_underscore	DOUBLE_UNDERSCORE
abc	abc	ABC
abC	ab_c	AB_C
aBc	a_bc	A_BC
aBC	a_bc	A_BC
ABc	a_bc	A_BC
ABC	abc	ABC
abc123def456	abc123def456	ABC123DEF456
abc123Def456	abc123_def456	ABC123_DEF456
abc123DEF456	abc123_def456	ABC123_DEF456
ABC123DEF456	abc123def456	ABC123DEF456
ABC123def456	abc123def456	ABC123DEF456
Abc123def456	abc123def456	ABC123DEF456
abc	abc	ABC
abc	abc	ABC
abc	abc	ABC
abc def	abc_def	ABC_DEF

Kebab Case

Rewrites an input string changing the case of each word and connecting them using hyphens. All non letter or digit characters are ignored.

namespace Yoh.Text.Json.NamingPolicies;

public static class JsonNamingPolicies
{
    public static JsonNamingPolicy KebabLowerCase { get; }
    public static JsonNamingPolicy KebabUpperCase { get; }
}

Input	Output (lower case)	Output (upper case)
XMLHttpRequest	xml-http-request	XML-HTTP-REQUEST
camelCase	camel-case	CAMEL-CASE
CamelCase	camel-case	CAMEL-CASE
snake_case	snake-case	SNAKE-CASE
SNAKE_CASE	snake-case	SNAKE-CASE
kebab-case	kebab-case	KEBAB-CASE
KEBAB-CASE	kebab-case	KEBAB-CASE
double space	double-space	DOUBLE-SPACE
double__underscore	double-underscore	DOUBLE-UNDERSCORE
abc	abc	ABC
abC	ab-c	AB-C
aBc	a-bc	A-BC
aBC	a-bc	A-BC
ABc	a-bc	A-BC
ABC	abc	ABC
abc123def456	abc123def456	ABC123DEF456
abc123Def456	abc123-def456	ABC123-DEF456
abc123DEF456	abc123-def456	ABC123-DEF456
ABC123DEF456	abc123def456	ABC123DEF456
ABC123def456	abc123def456	ABC123DEF456
Abc123def456	abc123def456	ABC123DEF456
abc	abc	ABC
abc	abc	ABC
abc	abc	ABC
abc def	abc-def	ABC-DEF