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Diffstat (limited to 'editors/code/src/nullable.ts')
| -rw-r--r-- | editors/code/src/nullable.ts | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/editors/code/src/nullable.ts b/editors/code/src/nullable.ts deleted file mode 100644 index e973e16290..0000000000 --- a/editors/code/src/nullable.ts +++ /dev/null @@ -1,19 +0,0 @@ -export type NotNull<T> = T extends null ? never : T; - -export type Nullable<T> = T | null; - -function isNotNull<T>(input: Nullable<T>): input is NotNull<T> { - return input !== null; -} - -function expectNotNull<T>(input: Nullable<T>, msg: string): NotNull<T> { - if (isNotNull(input)) { - return input; - } - - throw new TypeError(msg); -} - -export function unwrapNullable<T>(input: Nullable<T>): NotNull<T> { - return expectNotNull(input, `unwrapping \`null\``); -} |