/
camel-case.ts
80 lines (59 loc) · 2.6 KB
/
camel-case.ts
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import {expectType, expectAssignable} from 'tsd';
import type {CamelCase} from '../index';
// CamelCase
const camelFromPascal: CamelCase<'FooBar'> = 'fooBar';
expectType<'fooBar'>(camelFromPascal);
const camelFromKebab: CamelCase<'foo-bar'> = 'fooBar';
expectType<'fooBar'>(camelFromKebab);
const camelFromComplexKebab: CamelCase<'foo-bar-abc-123'> = 'fooBarAbc123';
expectType<'fooBarAbc123'>(camelFromComplexKebab);
const camelFromSpace: CamelCase<'foo bar'> = 'fooBar';
expectType<'fooBar'>(camelFromSpace);
const camelFromSnake: CamelCase<'foo_bar'> = 'fooBar';
expectType<'fooBar'>(camelFromSnake);
const noDelimiterFromMono: CamelCase<'foobar'> = 'foobar';
expectType<'foobar'>(noDelimiterFromMono);
const camelFromMixed: CamelCase<'foo-bar_abc xyzBarFoo'> = 'fooBarAbcXyzBarFoo';
expectType<'fooBarAbcXyzBarFoo'>(camelFromMixed);
const camelFromVendorPrefixedCssProperty: CamelCase<'-webkit-animation'> = 'webkitAnimation';
expectType<'webkitAnimation'>(camelFromVendorPrefixedCssProperty);
const camelFromDoublePrefixedKebab: CamelCase<'--very-prefixed'> = 'veryPrefixed';
expectType<'veryPrefixed'>(camelFromDoublePrefixedKebab);
const camelFromRepeatedSeparators: CamelCase<'foo____bar'> = 'fooBar';
expectType<'fooBar'>(camelFromRepeatedSeparators);
const camelFromUppercase: CamelCase<'FOO'> = 'foo';
expectType<'foo'>(camelFromUppercase);
const camelFromLowercase: CamelCase<'foo'> = 'foo';
expectType<'foo'>(camelFromLowercase);
const camelFromScreamingSnakeCase: CamelCase<'FOO_BAR'> = 'fooBar';
expectType<'fooBar'>(camelFromScreamingSnakeCase);
const camelFromScreamingKebabCase: CamelCase<'FOO-BAR'> = 'fooBar';
expectType<'fooBar'>(camelFromScreamingKebabCase);
// Verifying example
type CamelCasedProperties<T> = {
[K in keyof T as CamelCase<K>]: T[K]
};
type RawOptions = {
'dry-run': boolean;
'full_family_name': string;
foo: number;
BAR: string;
QUZ_QUX: number;
'OTHER-FIELD': boolean;
};
expectAssignable<CamelCasedProperties<RawOptions>>({
dryRun: true,
fullFamilyName: 'bar.js',
foo: 123,
bar: 'foo',
quzQux: 6,
otherField: false,
});
expectType<CamelCase<'fooBAR'>>('fooBAR');
expectType<CamelCase<'fooBAR', {preserveConsecutiveUppercase: false}>>('fooBar');
expectType<CamelCase<'fooBARBiz'>>('fooBARBiz');
expectType<CamelCase<'fooBARBiz', {preserveConsecutiveUppercase: false}>>('fooBarBiz');
expectType<CamelCase<'foo BAR-Biz_BUZZ'>>('fooBARBizBUZZ');
expectType<CamelCase<'foo BAR-Biz_BUZZ', {preserveConsecutiveUppercase: false}>>('fooBarBizBuzz');
expectType<CamelCase<string>>('string' as string);
expectType<CamelCase<string, {preserveConsecutiveUppercase: false}>>('string' as string);