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الملفات الموجودة في هذا الـ Path:
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CHANGELOG.md
LICENSE
README.md
assert.d.ts
assert.js
deferror.d.ts
deferror.js
ensure.d.ts
ensure.js
illegal-arguments.d.ts
illegal-arguments.js
illegal-arity.d.ts
illegal-arity.js
illegal-state.d.ts
illegal-state.js
index.d.ts
index.js
io.d.ts
io.js
out-of-bounds.d.ts
out-of-bounds.js
package.json
unsupported.d.ts
unsupported.js
مشاهدة ملف: ensure.js
import { assert } from "./assert.js";
/**
* Higher-order function to define ensurance assertions. Takes a `pred`icate
* function and an `expected` (type) name, returns a new function which accepts
* 2 args (an arbitrary value `x` and optional error `msg`). When called, checks
* `x` for non-null and if so applies given `pred`icate. If result is false (or
* `x` is nullish) and iff {@link assert} is enabled, throws a
* {@link AssertionError} with given `msg` (or a constructed default msg).
* Otherwise function is a no-op.
*
* @param pred
* @param expected
*/
export const defEnsure = (pred, expected) => (x, msg) => {
x != null
? assert(() => pred(x), msg || `expected ${expected}, got ${typeof x}`)
: assert(false, `expected ${expected}, got ${x}`);
return x;
};
/**
* Only enabled if {@link assert} is enabled (otherwise no-op). Checks if `x` is
* a JS array and if not throws {@link AssertionError}, optionally with given
* `msg`.
*
* @remarks
* See {@link defEnsure} for details.
*
* @param x
* @param msg
*/
export const ensureArray = defEnsure((x) => Array.isArray(x), `array`);
/**
* Only enabled if {@link assert} is enabled (otherwise no-op). Checks if `x` is
* a bigint and if not throws {@link AssertionError}, optionally with given
* `msg`.
*
* @remarks
* See {@link defEnsure} for details.
*
* @param x
* @param msg
*/
export const ensureBigInt = defEnsure((x) => typeof x === "bigint", "bigint");
/**
* Only enabled if {@link assert} is enabled (otherwise no-op). Checks if `x` is
* a boolean and if not throws {@link AssertionError}, optionally with given
* `msg`.
*
* @remarks
* See {@link defEnsure} for details.
*
* @param x
* @param msg
*/
export const ensureBoolean = defEnsure((x) => typeof x === "boolean", "boolean");
/**
* Only enabled if {@link assert} is enabled (otherwise no-op). Checks if `x` is
* a function and if not throws {@link AssertionError}, optionally with given
* `msg`.
*
* @remarks
* See {@link defEnsure} for details.
*
* @param x
* @param msg
*/
export const ensureFunction = defEnsure((x) => typeof x === "function", "function");
/**
* Only enabled if {@link assert} is enabled (otherwise no-op). Checks if `x` is
* an ES6 iterable and if not throws {@link AssertionError}, optionally with
* given `msg`.
*
* @remarks
* See {@link defEnsure} for details.
*
* @param x
* @param msg
*/
export const ensureIterable = defEnsure((x) => typeof x[Symbol.iterator] === "function", "iterable");
/**
* Only enabled if {@link assert} is enabled (otherwise no-op). Checks if `x` is
* a number and if not throws {@link AssertionError}, optionally with given
* `msg`.
*
* @remarks
* See {@link defEnsure} for details.
*
* @param x
* @param msg
*/
export const ensureNumber = defEnsure((x) => typeof x === "number", "number");
/**
* Only enabled if {@link assert} is enabled (otherwise no-op). Checks if `x` is
* a string and if not throws {@link AssertionError}, optionally with given
* `msg`.
*
* @remarks
* See {@link defEnsure} for details.
*
* @param x
* @param msg
*/
export const ensureString = defEnsure((x) => typeof x === "string", "string");
/**
* Only enabled if {@link assert} is enabled (otherwise no-op). Checks if `x` is
* a symbol and if not throws {@link AssertionError}, optionally with given
* `msg`.
*
* @remarks
* See {@link defEnsure} for details.
*
* @param x
* @param msg
*/
export const ensureSymbol = defEnsure((x) => typeof x === "symbol", "symbol");