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Fix handling of pascal case inputs in DelimiterCase (#302)

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Ben Drucker 2021-10-27 02:11:15 -07:00 committed by GitHub
parent 55ed9d1f75
commit 2b7ad9a72d
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3 changed files with 11 additions and 3 deletions
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8
source/delimiter-case.d.ts vendored
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@ -24,8 +24,9 @@ Format a specific part of the splitted string literal that `StringArrayToDelimit
@see StringArrayToDelimiterCase
*/
type StringPartToDelimiterCase<StringPart extends string, UsedWordSeparators extends string, UsedUpperCaseCharacters extends string, Delimiter extends string> =
type StringPartToDelimiterCase<StringPart extends string, Start extends boolean, UsedWordSeparators extends string, UsedUpperCaseCharacters extends string, Delimiter extends string> =
StringPart extends UsedWordSeparators ? Delimiter :
Start extends true ? Lowercase<StringPart> :
StringPart extends UsedUpperCaseCharacters ? `${Delimiter}${Lowercase<StringPart>}` :
StringPart;
@ -36,9 +37,9 @@ It receives `UsedWordSeparators` and `UsedUpperCaseCharacters` as input to ensur
@see SplitIncludingDelimiters
*/
type StringArrayToDelimiterCase<Parts extends readonly any[], UsedWordSeparators extends string, UsedUpperCaseCharacters extends string, Delimiter extends string> =
type StringArrayToDelimiterCase<Parts extends readonly any[], Start extends boolean, UsedWordSeparators extends string, UsedUpperCaseCharacters extends string, Delimiter extends string> =
Parts extends [`${infer FirstPart}`, ...infer RemainingParts]
? `${StringPartToDelimiterCase<FirstPart, UsedWordSeparators, UsedUpperCaseCharacters, Delimiter>}${StringArrayToDelimiterCase<RemainingParts, UsedWordSeparators, UsedUpperCaseCharacters, Delimiter>}`
? `${StringPartToDelimiterCase<FirstPart, Start, UsedWordSeparators, UsedUpperCaseCharacters, Delimiter>}${StringArrayToDelimiterCase<RemainingParts, false, UsedWordSeparators, UsedUpperCaseCharacters, Delimiter>}`
: '';
/**
@ -81,6 +82,7 @@ const rawCliOptions: OddlyCasedProperties<SomeOptions> = {
export type DelimiterCase<Value, Delimiter extends string> = Value extends string
? StringArrayToDelimiterCase<
SplitIncludingDelimiters<Value, WordSeparators | UpperCaseCharacters>,
true,
WordSeparators,
UpperCaseCharacters,
Delimiter

3
test-d/delimiter-case.ts
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@ -16,6 +16,9 @@ expectType<'foo#bar'>(delimiterFromCamel);
const delimiterFromComplexCamel: DelimiterCase<'fooBarAbc123', '#'> = 'foo#bar#abc123';
expectType<'foo#bar#abc123'>(delimiterFromComplexCamel);
const delimiterFromPascal: DelimiterCase<'FooBar', '#'> = 'foo#bar';
expectType<'foo#bar'>(delimiterFromPascal);
const delimiterFromKebab: DelimiterCase<'foo-bar', '#'> = 'foo#bar';
expectType<'foo#bar'>(delimiterFromKebab);

3
test-d/snake-case.ts
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@ -4,6 +4,9 @@ import {SnakeCase} from '../index';
const snakeFromCamel: SnakeCase<'fooBar'> = 'foo_bar';
expectType<'foo_bar'>(snakeFromCamel);
const snakeFromPascal: SnakeCase<'FooBar'> = 'foo_bar';
expectType<'foo_bar'>(snakeFromPascal);
const snakeFromKebab: SnakeCase<'foo-bar'> = 'foo_bar';
expectType<'foo_bar'>(snakeFromKebab);