@kuindji/sql-type-parser/dist/utils.d.ts

Type-level SQL parser for TypeScript

/**
 * Type-level string and number utilities for the SQL parser
 */
/**
 * Remove surrounding quotes from an identifier (double quotes or backticks)
 */
export type RemoveQuotes<T extends string> = Trim<T> extends `"${infer Inner}"` ? Inner : Trim<T> extends `\`${infer Inner}\`` ? Inner : Trim<T> extends `'${infer Inner}'` ? Inner : Trim<T>;
/**
 * Trim leading and trailing whitespace from a string
 */
export type Trim<T extends string> = T extends ` ${infer Rest}` ? Trim<Rest> : T extends `${infer Rest} ` ? Trim<Rest> : T extends `\n${infer Rest}` ? Trim<Rest> : T extends `${infer Rest}\n` ? Trim<Rest> : T extends `\r${infer Rest}` ? Trim<Rest> : T extends `${infer Rest}\r` ? Trim<Rest> : T extends `\t${infer Rest}` ? Trim<Rest> : T extends `${infer Rest}\t` ? Trim<Rest> : T;
/**
 * Join array of strings with a separator
 */
export type Join<T extends string[], Sep extends string = " "> = T extends [
    infer First extends string,
    ...infer Rest extends string[]
] ? Rest extends [] ? First : `${First}${Sep}${Join<Rest, Sep>}` : "";
/**
 * Uppercase a string (limited set of characters for SQL keywords)
 */
export type ToUpperCase<S extends string> = S extends `${infer C}${infer Rest}` ? `${UpperChar<C>}${ToUpperCase<Rest>}` : S;
type UpperChar<C extends string> = C extends "a" ? "A" : C extends "b" ? "B" : C extends "c" ? "C" : C extends "d" ? "D" : C extends "e" ? "E" : C extends "f" ? "F" : C extends "g" ? "G" : C extends "h" ? "H" : C extends "i" ? "I" : C extends "j" ? "J" : C extends "k" ? "K" : C extends "l" ? "L" : C extends "m" ? "M" : C extends "n" ? "N" : C extends "o" ? "O" : C extends "p" ? "P" : C extends "q" ? "Q" : C extends "r" ? "R" : C extends "s" ? "S" : C extends "t" ? "T" : C extends "u" ? "U" : C extends "v" ? "V" : C extends "w" ? "W" : C extends "x" ? "X" : C extends "y" ? "Y" : C extends "z" ? "Z" : C;
/**
 * Increment a number (limited range 0-20)
 */
export type Increment<N extends number> = N extends 0 ? 1 : N extends 1 ? 2 : N extends 2 ? 3 : N extends 3 ? 4 : N extends 4 ? 5 : N extends 5 ? 6 : N extends 6 ? 7 : N extends 7 ? 8 : N extends 8 ? 9 : N extends 9 ? 10 : N extends 10 ? 11 : N extends 11 ? 12 : N extends 12 ? 13 : N extends 13 ? 14 : N extends 14 ? 15 : N extends 15 ? 16 : N extends 16 ? 17 : N extends 17 ? 18 : N extends 18 ? 19 : N extends 19 ? 20 : never;
/**
 * Decrement a number (limited range 0-20)
 */
export type Decrement<N extends number> = N extends 20 ? 19 : N extends 19 ? 18 : N extends 18 ? 17 : N extends 17 ? 16 : N extends 16 ? 15 : N extends 15 ? 14 : N extends 14 ? 13 : N extends 13 ? 12 : N extends 12 ? 11 : N extends 11 ? 10 : N extends 10 ? 9 : N extends 9 ? 8 : N extends 8 ? 7 : N extends 7 ? 6 : N extends 6 ? 5 : N extends 5 ? 4 : N extends 4 ? 3 : N extends 3 ? 2 : N extends 2 ? 1 : N extends 1 ? 0 : never;
/**
 * Flatten/simplify a type for better readability
 */
export type Flatten<T> = {
    [K in keyof T]: T[K];
} & {};
/**
 * Error marker type
 */
export type ParseError<Message extends string> = {
    error: true;
    message: Message;
};
/**
 * Check if a type is a parse error
 */
export type IsParseError<T> = T extends ParseError<string> ? true : false;
export {};
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