@lonu/stc
Version:
A tool for converting OpenApi/Swagger/Apifox into code.
343 lines • 16 kB
TypeScript
/**
* Command line arguments parser based on
* {@link https://github.com/minimistjs/minimist | minimist}.
*
* See {@linkcode parseArgs} for more information.
*
* @example Usage
* ```ts
* import { parseArgs } from "@std/cli/parse-args";
* import { assertEquals } from "@std/assert/equals";
*
* // For proper use, one should use `parseArgs(Deno.args)`
* assertEquals(parseArgs(["--foo", "--bar=baz", "./quux.txt"]), {
* foo: true,
* bar: "baz",
* _: ["./quux.txt"],
* });
* ```
*
* @example `string` and `boolean` options
*
* Use `string` and `boolean` options to specify the type of the argument.
*
* ```ts
* import { parseArgs } from "@std/cli/parse-args";
* import { assertEquals } from "@std/assert/equals";
*
* const args = parseArgs(["--foo", "--bar", "baz"], {
* boolean: ["foo"],
* string: ["bar"],
* });
*
* assertEquals(args, { foo: true, bar: "baz", _: [] });
* ```
*
* @example `collect` option
*
* `collect` option tells the parser to treat the option as an array. All
* values will be collected into one array. If a non-collectable option is used
* multiple times, the last value is used.
*
* ```ts
* import { parseArgs } from "@std/cli/parse-args";
* import { assertEquals } from "@std/assert/equals";
*
* const args = parseArgs(["--foo", "bar", "--foo", "baz"], {
* collect: ["foo"],
* });
*
* assertEquals(args, { foo: ["bar", "baz"], _: [] });
* ```
*
* @example `negatable` option
*
* `negatable` option tells the parser to treat the option can be negated by
* prefixing them with `--no-`, like `--no-config`.
*
* ```ts
* import { parseArgs } from "@std/cli/parse-args";
* import { assertEquals } from "@std/assert/equals";
*
* const args = parseArgs(["--no-foo"], {
* boolean: ["foo"],
* negatable: ["foo"],
* });
*
* assertEquals(args, { foo: false, _: [] });
* ```
*
* @module
*/
/** Combines recursively all intersection types and returns a new single type.
* @internal
*/
type Id<TRecord> = TRecord extends Record<string, unknown> ? TRecord extends infer InferredRecord ? {
[Key in keyof InferredRecord]: Id<InferredRecord[Key]>;
} : never : TRecord;
/** Converts a union type `A | B | C` into an intersection type `A & B & C`.
* @internal
*/
type UnionToIntersection<TValue> = (TValue extends unknown ? (args: TValue) => unknown : never) extends (args: infer R) => unknown ? R extends Record<string, unknown> ? R : never : never;
/** @internal */
type BooleanType = boolean | string | undefined;
/** @internal */
type StringType = string | undefined;
/** @internal */
type ArgType = StringType | BooleanType;
/** @internal */
type Collectable = string | undefined;
/** @internal */
type Negatable = string | undefined;
type UseTypes<TBooleans extends BooleanType, TStrings extends StringType, TCollectable extends Collectable> = undefined extends ((false extends TBooleans ? undefined : TBooleans) & TCollectable & TStrings) ? false : true;
/**
* Creates a record with all available flags with the corresponding type and
* default type.
* @internal
*/
type Values<TBooleans extends BooleanType, TStrings extends StringType, TCollectable extends Collectable, TNegatable extends Negatable, TDefault extends Record<string, unknown> | undefined, TAliases extends Aliases | undefined> = UseTypes<TBooleans, TStrings, TCollectable> extends true ? Record<string, unknown> & AddAliases<SpreadDefaults<CollectValues<TStrings, string, TCollectable, TNegatable> & RecursiveRequired<CollectValues<TBooleans, boolean, TCollectable>> & CollectUnknownValues<TBooleans, TStrings, TCollectable, TNegatable>, DedotRecord<TDefault>>, TAliases> : Record<string, any>;
/** @internal */
type Aliases<TArgNames = string, TAliasNames extends string = string> = Partial<Record<Extract<TArgNames, string>, TAliasNames | ReadonlyArray<TAliasNames>>>;
type AddAliases<TArgs, TAliases extends Aliases | undefined> = {
[TArgName in keyof TArgs as AliasNames<TArgName, TAliases>]: TArgs[TArgName];
};
type AliasNames<TArgName, TAliases extends Aliases | undefined> = TArgName extends keyof TAliases ? string extends TAliases[TArgName] ? TArgName : TAliases[TArgName] extends string ? TArgName | TAliases[TArgName] : TAliases[TArgName] extends Array<string> ? TArgName | TAliases[TArgName][number] : TArgName : TArgName;
/**
* Spreads all default values of Record `TDefaults` into Record `TArgs`
* and makes default values required.
*
* **Example:**
* `SpreadValues<{ foo?: boolean, bar?: number }, { foo: number }>`
*
* **Result:** `{ foo: boolean | number, bar?: number }`
*/
type SpreadDefaults<TArgs, TDefaults> = TDefaults extends undefined ? TArgs : TArgs extends Record<string, unknown> ? Omit<TArgs, keyof TDefaults> & {
[Default in keyof TDefaults]: Default extends keyof TArgs ? (TArgs[Default] & TDefaults[Default] | TDefaults[Default]) extends Record<string, unknown> ? NonNullable<SpreadDefaults<TArgs[Default], TDefaults[Default]>> : TDefaults[Default] | NonNullable<TArgs[Default]> : unknown;
} : never;
/**
* Defines the Record for the `default` option to add
* auto-suggestion support for IDE's.
* @internal
*/
type Defaults<TBooleans extends BooleanType, TStrings extends StringType> = Id<UnionToIntersection<Record<string, unknown> & MapTypes<TStrings, unknown> & MapTypes<TBooleans, unknown> & MapDefaults<TBooleans> & MapDefaults<TStrings>>>;
type MapDefaults<TArgNames extends ArgType> = Partial<Record<TArgNames extends string ? TArgNames : string, unknown>>;
type RecursiveRequired<TRecord> = TRecord extends Record<string, unknown> ? {
[Key in keyof TRecord]-?: RecursiveRequired<TRecord[Key]>;
} : TRecord;
/** Same as `MapTypes` but also supports collectable options. */
type CollectValues<TArgNames extends ArgType, TType, TCollectable extends Collectable, TNegatable extends Negatable = undefined> = UnionToIntersection<Extract<TArgNames, TCollectable> extends string ? (Exclude<TArgNames, TCollectable> extends never ? Record<never, never> : MapTypes<Exclude<TArgNames, TCollectable>, TType, TNegatable>) & (Extract<TArgNames, TCollectable> extends never ? Record<never, never> : RecursiveRequired<MapTypes<Extract<TArgNames, TCollectable>, Array<TType>, TNegatable>>) : MapTypes<TArgNames, TType, TNegatable>>;
/** Same as `Record` but also supports dotted and negatable options. */
type MapTypes<TArgNames extends ArgType, TType, TNegatable extends Negatable = undefined> = undefined extends TArgNames ? Record<never, never> : TArgNames extends `${infer Name}.${infer Rest}` ? {
[Key in Name]?: MapTypes<Rest, TType, TNegatable extends `${Name}.${infer Negate}` ? Negate : undefined>;
} : TArgNames extends string ? Partial<Record<TArgNames, TNegatable extends TArgNames ? TType | false : TType>> : Record<never, never>;
type CollectUnknownValues<TBooleans extends BooleanType, TStrings extends StringType, TCollectable extends Collectable, TNegatable extends Negatable> = UnionToIntersection<TCollectable extends TBooleans & TStrings ? Record<never, never> : DedotRecord<Record<Exclude<Extract<Exclude<TCollectable, TNegatable>, string>, Extract<TStrings | TBooleans, string>>, Array<unknown>> & Record<Exclude<Extract<Extract<TCollectable, TNegatable>, string>, Extract<TStrings | TBooleans, string>>, Array<unknown> | false>>>;
/** Converts `{ "foo.bar.baz": unknown }` into `{ foo: { bar: { baz: unknown } } }`. */
type DedotRecord<TRecord> = Record<string, unknown> extends TRecord ? TRecord : TRecord extends Record<string, unknown> ? UnionToIntersection<ValueOf<{
[Key in keyof TRecord]: Key extends string ? Dedot<Key, TRecord[Key]> : never;
}>> : TRecord;
type Dedot<TKey extends string, TValue> = TKey extends `${infer Name}.${infer Rest}` ? {
[Key in Name]: Dedot<Rest, TValue>;
} : {
[Key in TKey]: TValue;
};
type ValueOf<TValue> = TValue[keyof TValue];
/** The value returned from {@linkcode parseArgs}. */
export type Args<TArgs extends Record<string, unknown> = Record<string, any>, TDoubleDash extends boolean | undefined = undefined> = Id<TArgs & {
/** Contains all the arguments that didn't have an option associated with
* them. */
_: Array<string | number>;
} & (boolean extends TDoubleDash ? DoubleDash : true extends TDoubleDash ? Required<DoubleDash> : Record<never, never>)>;
/** @internal */
type DoubleDash = {
/** Contains all the arguments that appear after the double dash: "--". */
"--"?: Array<string>;
};
/** Options for {@linkcode parseArgs}. */
export interface ParseOptions<TBooleans extends BooleanType = BooleanType, TStrings extends StringType = StringType, TCollectable extends Collectable = Collectable, TNegatable extends Negatable = Negatable, TDefault extends Record<string, unknown> | undefined = Record<string, unknown> | undefined, TAliases extends Aliases | undefined = Aliases | undefined, TDoubleDash extends boolean | undefined = boolean | undefined> {
/**
* When `true`, populate the result `_` with everything before the `--` and
* the result `['--']` with everything after the `--`.
*
* @default {false}
*
* @example Double dash option is false
* ```ts
* // $ deno run example.ts -- a arg1
* import { parseArgs } from "@std/cli/parse-args";
* const args = parseArgs(Deno.args, { "--": false }); // args equals { _: [ "a", "arg1" ] }
* ```
*
* @example Double dash option is true
* ```ts
* // $ deno run example.ts -- a arg1
* import { parseArgs } from "@std/cli/parse-args";
* const args = parseArgs(Deno.args, { "--": true }); // args equals { _: [], --: [ "a", "arg1" ] }
* ```
*/
"--"?: TDoubleDash;
/**
* An object mapping string names to strings or arrays of string argument
* names to use as aliases.
*
* @default {{}}
*/
alias?: TAliases;
/**
* A boolean, string or array of strings to always treat as booleans. If
* `true` will treat all double hyphenated arguments without equal signs as
* `boolean` (e.g. affects `--foo`, not `-f` or `--foo=bar`).
* All `boolean` arguments will be set to `false` by default.
*
* @default {false}
*/
boolean?: TBooleans | ReadonlyArray<Extract<TBooleans, string>>;
/**
* An object mapping string argument names to default values.
*
* @default {{}}
*/
default?: TDefault & Defaults<TBooleans, TStrings>;
/**
* When `true`, populate the result `_` with everything after the first
* non-option.
*
* @default {false}
*/
stopEarly?: boolean;
/**
* A string or array of strings argument names to always treat as strings.
*
* @default {[]}
*/
string?: TStrings | ReadonlyArray<Extract<TStrings, string>>;
/**
* A string or array of strings argument names to always treat as arrays.
* Collectable options can be used multiple times. All values will be
* collected into one array. If a non-collectable option is used multiple
* times, the last value is used.
*
* @default {[]}
*/
collect?: TCollectable | ReadonlyArray<Extract<TCollectable, string>>;
/**
* A string or array of strings argument names which can be negated
* by prefixing them with `--no-`, like `--no-config`.
*
* @default {[]}
*/
negatable?: TNegatable | ReadonlyArray<Extract<TNegatable, string>>;
/**
* A function which is invoked with a command line parameter not defined in
* the `options` configuration object. If the function returns `false`, the
* unknown option is not added to `parsedArgs`.
*
* @default {unknown}
*/
unknown?: (arg: string, key?: string, value?: unknown) => unknown;
}
/**
* Take a set of command line arguments, optionally with a set of options, and
* return an object representing the flags found in the passed arguments.
*
* By default, any arguments starting with `-` or `--` are considered boolean
* flags. If the argument name is followed by an equal sign (`=`) it is
* considered a key-value pair. Any arguments which could not be parsed are
* available in the `_` property of the returned object.
*
* By default, this module tries to determine the type of all arguments
* automatically and the return type of this function will have an index
* signature with `any` as value (`{ [x: string]: any }`).
*
* If the `string`, `boolean` or `collect` option is set, the return value of
* this function will be fully typed and the index signature of the return
* type will change to `{ [x: string]: unknown }`.
*
* Any arguments after `'--'` will not be parsed and will end up in `parsedArgs._`.
*
* Numeric-looking arguments will be returned as numbers unless `options.string`
* or `options.boolean` is set for that argument name.
*
* See {@linkcode ParseOptions} for more information.
*
* @param args An array of command line arguments.
* @param options Options for the parse function.
*
* @typeParam TArgs Type of result.
* @typeParam TDoubleDash Used by `TArgs` for the result.
* @typeParam TBooleans Used by `TArgs` for the result.
* @typeParam TStrings Used by `TArgs` for the result.
* @typeParam TCollectable Used by `TArgs` for the result.
* @typeParam TNegatable Used by `TArgs` for the result.
* @typeParam TDefaults Used by `TArgs` for the result.
* @typeParam TAliases Used by `TArgs` for the result.
* @typeParam TAliasArgNames Used by `TArgs` for the result.
* @typeParam TAliasNames Used by `TArgs` for the result.
*
* @return The parsed arguments.
*
* @example Usage
* ```ts
* import { parseArgs } from "@std/cli/parse-args";
* import { assertEquals } from "@std/assert/equals";
*
* // For proper use, one should use `parseArgs(Deno.args)`
* assertEquals(parseArgs(["--foo", "--bar=baz", "./quux.txt"]), {
* foo: true,
* bar: "baz",
* _: ["./quux.txt"],
* });
* ```
*
* @example `string` and `boolean` options
*
* Use `string` and `boolean` options to specify the type of the argument.
*
* ```ts
* import { parseArgs } from "@std/cli/parse-args";
* import { assertEquals } from "@std/assert/equals";
*
* const args = parseArgs(["--foo", "--bar", "baz"], {
* boolean: ["foo"],
* string: ["bar"],
* });
*
* assertEquals(args, { foo: true, bar: "baz", _: [] });
* ```
*
* @example `collect` option
*
* `collect` option tells the parser to treat the option as an array. All
* values will be collected into one array. If a non-collectable option is used
* multiple times, the last value is used.
*
* ```ts
* import { parseArgs } from "@std/cli/parse-args";
* import { assertEquals } from "@std/assert/equals";
*
* const args = parseArgs(["--foo", "bar", "--foo", "baz"], {
* collect: ["foo"],
* });
*
* assertEquals(args, { foo: ["bar", "baz"], _: [] });
* ```
*
* @example `negatable` option
*
* `negatable` option tells the parser to treat the option can be negated by
* prefixing them with `--no-`, like `--no-config`.
*
* ```ts
* import { parseArgs } from "@std/cli/parse-args";
* import { assertEquals } from "@std/assert/equals";
*
* const args = parseArgs(["--no-foo"], {
* boolean: ["foo"],
* negatable: ["foo"],
* });
*
* assertEquals(args, { foo: false, _: [] });
* ```
*/
export declare function parseArgs<TArgs extends Values<TBooleans, TStrings, TCollectable, TNegatable, TDefaults, TAliases>, TDoubleDash extends boolean | undefined = undefined, TBooleans extends BooleanType = undefined, TStrings extends StringType = undefined, TCollectable extends Collectable = undefined, TNegatable extends Negatable = undefined, TDefaults extends Record<string, unknown> | undefined = undefined, TAliases extends Aliases<TAliasArgNames, TAliasNames> | undefined = undefined, TAliasArgNames extends string = string, TAliasNames extends string = string>(args: string[], options?: ParseOptions<TBooleans, TStrings, TCollectable, TNegatable, TDefaults, TAliases, TDoubleDash>): Args<TArgs, TDoubleDash>;
export {};
//# sourceMappingURL=parse_args.d.ts.map