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52 lines
1.6 KiB
TypeScript
52 lines
1.6 KiB
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/where.js
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import _curry2 from './internal/_curry2.js';
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import _has from './internal/_has.js';
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/**
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* Takes a spec object and a test object; returns true if the test satisfies
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* the spec. Each of the spec's own properties must be a predicate function.
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* Each predicate is applied to the value of the corresponding property of the
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* test object. `where` returns true if all the predicates return true, false
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* otherwise.
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*
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* `where` is well suited to declaratively expressing constraints for other
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* functions such as [`filter`](#filter) and [`find`](#find).
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*
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* @func
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* @memberOf R
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* @since v0.1.1
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* @category Object
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* @sig {String: (* -> Boolean)} -> {String: *} -> Boolean
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* @param {Object} spec
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* @param {Object} testObj
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* @return {Boolean}
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* @see R.propSatisfies, R.whereEq
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* @example
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*
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* // pred :: Object -> Boolean
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* const pred = R.where({
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* a: R.equals('foo'),
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* b: R.complement(R.equals('bar')),
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* x: R.gt(R.__, 10),
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* y: R.lt(R.__, 20)
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* });
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*
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* pred({a: 'foo', b: 'xxx', x: 11, y: 19}); //=> true
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* pred({a: 'xxx', b: 'xxx', x: 11, y: 19}); //=> false
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* pred({a: 'foo', b: 'bar', x: 11, y: 19}); //=> false
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* pred({a: 'foo', b: 'xxx', x: 10, y: 19}); //=> false
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* pred({a: 'foo', b: 'xxx', x: 11, y: 20}); //=> false
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*/
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var where = _curry2(function where(spec, testObj) {
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for (var prop in spec) {
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if (_has(prop, spec) && !spec[prop](testObj[prop])) {
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return false;
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}
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}
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return true;
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});
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export default where;
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