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| 1 | +/** A unique symbol used for branding `PackageName` types. */ |
| 2 | +declare const PACKAGE_NAME_BRAND: unique symbol; |
| 3 | + |
| 4 | +/** |
| 5 | + * A **branded type** representing a validated package name. |
| 6 | + * |
| 7 | + * - This type is **enforced at runtime** using `isPackageName()`. |
| 8 | + * - Ensures that a package name conforms to the expected format. |
| 9 | + * |
| 10 | + * @example |
| 11 | + * |
| 12 | + * ```ts |
| 13 | + * const pkg: PackageName = "valid-package" as PackageName; |
| 14 | + * ``` |
| 15 | + * |
| 16 | + * @public |
| 17 | + */ |
| 18 | +export declare type PackageName = string & { |
| 19 | + [PACKAGE_NAME_BRAND]: void; |
| 20 | +}; |
| 21 | + |
| 22 | +/** |
| 23 | + * Defines the allowed characters for any package name. |
| 24 | + * |
| 25 | + * Allowed characters: |
| 26 | + * |
| 27 | + * - Lowercase letters (`a-z`) |
| 28 | + * - Uppercase letters (`A-Z`) |
| 29 | + * - Digits (`0-9`) |
| 30 | + * - Underscore (`_`) |
| 31 | + * - Dash (`-`) |
| 32 | + * - Dot (`.`) |
| 33 | + * |
| 34 | + * @public |
| 35 | + */ |
| 36 | +export declare type PackageNameChar = |
| 37 | + | "a" |
| 38 | + | "b" |
| 39 | + | "c" |
| 40 | + | "d" |
| 41 | + | "e" |
| 42 | + | "f" |
| 43 | + | "g" |
| 44 | + | "h" |
| 45 | + | "i" |
| 46 | + | "j" |
| 47 | + | "k" |
| 48 | + | "l" |
| 49 | + | "m" |
| 50 | + | "n" |
| 51 | + | "o" |
| 52 | + | "p" |
| 53 | + | "q" |
| 54 | + | "r" |
| 55 | + | "s" |
| 56 | + | "t" |
| 57 | + | "u" |
| 58 | + | "v" |
| 59 | + | "w" |
| 60 | + | "x" |
| 61 | + | "y" |
| 62 | + | "z" |
| 63 | + | "A" |
| 64 | + | "B" |
| 65 | + | "C" |
| 66 | + | "D" |
| 67 | + | "E" |
| 68 | + | "F" |
| 69 | + | "G" |
| 70 | + | "H" |
| 71 | + | "I" |
| 72 | + | "J" |
| 73 | + | "K" |
| 74 | + | "L" |
| 75 | + | "M" |
| 76 | + | "N" |
| 77 | + | "O" |
| 78 | + | "P" |
| 79 | + | "Q" |
| 80 | + | "R" |
| 81 | + | "S" |
| 82 | + | "T" |
| 83 | + | "U" |
| 84 | + | "V" |
| 85 | + | "W" |
| 86 | + | "X" |
| 87 | + | "Y" |
| 88 | + | "Z" |
| 89 | + | "0" |
| 90 | + | "1" |
| 91 | + | "2" |
| 92 | + | "3" |
| 93 | + | "4" |
| 94 | + | "5" |
| 95 | + | "6" |
| 96 | + | "7" |
| 97 | + | "8" |
| 98 | + | "9" |
| 99 | + | "_" |
| 100 | + | "-" |
| 101 | + | "."; |
| 102 | + |
| 103 | +/** |
| 104 | + * Ensures that a string is a valid package name. |
| 105 | + * |
| 106 | + * - If `S` contains only valid characters and is not empty, it resolves to `S`. |
| 107 | + * - Otherwise, it resolves to `never`. |
| 108 | + * |
| 109 | + * @example |
| 110 | + * |
| 111 | + * ```ts |
| 112 | + * type Valid = PackageNameLiteral<"valid-name">; // 'valid-name' |
| 113 | + * type Invalid = PackageNameLiteral<"invalid!">; // never |
| 114 | + * type Empty = PackageNameLiteral<"">; // never |
| 115 | + * ``` |
| 116 | + * |
| 117 | + * @public |
| 118 | + */ |
| 119 | +export declare type PackageNameLiteral<S extends string> = |
| 120 | + ContainsOnlyPackageNameChars<S> & NonEmptyString<S>; |
| 121 | + |
| 122 | +/** |
| 123 | + * A type that accepts: |
| 124 | + * |
| 125 | + * - A **PackageName** (a runtime-validated string). |
| 126 | + * - A **string literal** that satisfies `PackageNameLiteral<S>`. |
| 127 | + * |
| 128 | + * This is useful for functions that accept both validated runtime values and |
| 129 | + * compile-time checked literals. |
| 130 | + * |
| 131 | + * @example |
| 132 | + * |
| 133 | + * ```ts |
| 134 | + * function processPackage(name: PackageNameOrLiteral) { ... } |
| 135 | + * |
| 136 | + * processPackage("valid-package"); // ✅ Allowed (checked at compile-time) |
| 137 | + * processPackage("invalid!"); // ❌ Compile-time error |
| 138 | + * ``` |
| 139 | + * |
| 140 | + * @param S - The input string type. |
| 141 | + * @public |
| 142 | + */ |
| 143 | +export declare type PackageNameOrLiteral<S extends string = string> = |
| 144 | + | PackageName |
| 145 | + | (S extends PackageNameLiteral<S> ? S : never); |
| 146 | + |
| 147 | +/** |
| 148 | + * Checks whether a string consists only of valid package name characters. |
| 149 | + * |
| 150 | + * - If `S` contains only allowed characters, it resolves to `S`. |
| 151 | + * - Otherwise, it resolves to `never`. |
| 152 | + * |
| 153 | + * @example |
| 154 | + * |
| 155 | + * ```ts |
| 156 | + * type Valid = ContainsOnlyPackageNameChars<"valid-name">; // 'valid-name' |
| 157 | + * type Invalid = ContainsOnlyPackageNameChars<"invalid!">; // never |
| 158 | + * ``` |
| 159 | + * |
| 160 | + * @public |
| 161 | + */ |
| 162 | +export declare type ContainsOnlyPackageNameChars<S extends string> = |
| 163 | + S extends "" |
| 164 | + ? "" |
| 165 | + : S extends `${infer First}${infer Rest}` |
| 166 | + ? First extends PackageNameChar |
| 167 | + ? ContainsOnlyPackageNameChars<Rest> extends never |
| 168 | + ? never |
| 169 | + : S |
| 170 | + : never |
| 171 | + : never; |
| 172 | + |
| 173 | +/** |
| 174 | + * Ensures that a string is non-empty. |
| 175 | + * |
| 176 | + * - If `T` is an empty string, it resolves to `never`. |
| 177 | + * - Otherwise, it resolves to `T`. |
| 178 | + * |
| 179 | + * @example |
| 180 | + * |
| 181 | + * ```ts |
| 182 | + * type Valid = NonEmptyString<"hello">; // 'hello' |
| 183 | + * type Invalid = NonEmptyString<"">; // never |
| 184 | + * ``` |
| 185 | + * |
| 186 | + * @public |
| 187 | + */ |
| 188 | +export declare type NonEmptyString<T extends string> = T extends "" ? never : T; |
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