5.10.111 • Published 1 year ago

@patrtorg/eaque-exercitationem v5.10.111

Weekly downloads
-
License
MIT
Repository
github
Last release
1 year ago

@patrtorg/eaque-exercitationem Version Badge

github actions coverage License Downloads

npm badge

Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for fully completed data descriptors and accessor descriptors.

Usage

const isDescriptor = require('@patrtorg/eaque-exercitationem');
const assert = require('assert');

const defaults = { configurable: false, enumerable: false };
const dataDefaults = { ...defaults, writable: false};

assert.ok(isDescriptor({ ...dataDefaults, value: 'foo' }));
assert.ok(isDescriptor({ ...defaults, get() {}, set() {} }));
assert.ok(!isDescriptor({ ...defaults, get: 'foo', set() {} }));

You may also check for a descriptor by passing an object as the first argument and property name (string) as the second argument.

const obj = { foo: 'abc' };

Object.defineProperty(obj, 'bar', { value: 'xyz' });
Reflect.defineProperty(obj, 'baz', { value: 'xyz' });

assert.equal(isDescriptor(obj, 'foo'), true);
assert.equal(isDescriptor(obj, 'bar'), true);
assert.equal(isDescriptor(obj, 'baz'), true);

Examples

value type

Returns false when not an object

assert.equal(isDescriptor('a'), false);
assert.equal(isDescriptor(null), false);
assert.equal(isDescriptor([]), false);

data descriptor

Returns true when the object has valid properties with valid values.

assert.equal(isDescriptor({ ...dataDefaults, value: 'foo' }), true);
assert.equal(isDescriptor({ ...dataDefaults, value() {} }), true);

Returns false when the object has invalid properties

assert.equal(isDescriptor({ ...dataDefaults, value: 'foo', bar: 'baz' }), false);
assert.equal(isDescriptor({ ...dataDefaults, value: 'foo', bar: 'baz' }), false);
assert.equal(isDescriptor({ ...dataDefaults, value: 'foo', enumerable: 'baz' }), false);
assert.equal(isDescriptor({ ...dataDefaults, value: 'foo', configurable: 'baz' }), false);
assert.equal(isDescriptor({ ...dataDefaults, value: 'foo', get() {} }), false);
assert.equal(isDescriptor({ ...dataDefaults, get() {}, value() {} }), false);

false when a value is not the correct type

assert.equal(isDescriptor({ ...dataDefaults, value: 'foo', enumerable: 'foo' }), false);
assert.equal(isDescriptor({ ...dataDefaults, value: 'foo', configurable: 'foo' }), false);
assert.equal(isDescriptor({ ...dataDefaults, value: 'foo', writable: 'foo' }), false);

accessor descriptor

true when the object has valid properties with valid values.

assert.equal(isDescriptor({ ...defaults, get() {}, set() {} }), true);
assert.equal(isDescriptor({ ...defaults, get() {} }), true);
assert.equal(isDescriptor({ ...defaults, set() {} }), true);

false when the object has invalid properties

assert.equal(isDescriptor({ ...defaults, get() {}, set() {}, bar: 'baz' }), false);
assert.equal(isDescriptor({ ...defaults, get() {}, set() {}, enumerable: 'baz' }), false);
assert.equal(isDescriptor({ ...defaults, get() {}, writable: true }), false);
assert.equal(isDescriptor({ ...defaults, get() {}, value: true }), false);

Returns false when an accessor is not a function

assert.equal(isDescriptor({ ...defaults, get() {}, set: 'baz' }), false);
assert.equal(isDescriptor({ ...defaults, get: 'foo', set() {} }), false);
assert.equal(isDescriptor({ ...defaults, get: 'foo', bar: 'baz' }), false);
assert.equal(isDescriptor({ ...defaults, get: 'foo', set: 'baz' }), false);

Returns false when a value is not the correct type

assert.equal(isDescriptor({ ...defaults, get() {}, set() {}, enumerable: 'foo' }), false);
assert.equal(isDescriptor({ ...defaults, set() {}, configurable: 'foo' }), false);
assert.equal(isDescriptor({ ...defaults, get() {}, configurable: 'foo' }), false);

Related projects

You might also be interested in these projects:

  • is-accessor-descriptor: Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
  • is-data-descriptor: Returns true if a value has the characteristics of a valid JavaScript data descriptor.
  • is-object: Returns true if the value is an object and not an array or null.

Tests

Simply clone the repo, npm install, and run npm test

5.10.111

1 year ago

5.10.110

1 year ago

5.10.109

1 year ago

5.10.108

1 year ago

5.9.108

1 year ago

5.9.107

1 year ago

5.9.106

1 year ago

5.9.105

1 year ago

5.9.104

1 year ago

5.9.103

1 year ago

5.8.103

1 year ago

5.8.102

1 year ago

5.8.101

1 year ago

5.8.100

1 year ago

5.8.99

1 year ago

5.8.98

1 year ago

4.8.98

1 year ago

4.7.98

1 year ago

4.7.97

1 year ago

4.7.96

1 year ago

4.7.95

1 year ago

4.7.94

1 year ago

4.7.93

1 year ago

4.7.92

1 year ago

4.7.91

1 year ago

4.7.90

1 year ago

4.7.89

1 year ago

4.7.88

1 year ago

4.7.87

1 year ago

4.7.86

1 year ago

4.7.85

1 year ago

4.7.84

1 year ago

4.7.83

1 year ago

4.7.82

1 year ago

3.7.82

1 year ago

3.6.82

1 year ago

3.6.81

1 year ago

3.6.80

1 year ago

3.6.79

1 year ago

3.6.78

1 year ago

3.6.77

1 year ago

3.6.76

1 year ago

3.6.75

1 year ago

3.6.74

1 year ago

3.6.73

1 year ago

3.6.72

1 year ago

3.6.71

1 year ago

3.6.70

1 year ago

3.6.69

1 year ago

3.6.68

1 year ago

3.6.67

1 year ago

3.6.66

1 year ago

3.6.65

1 year ago

3.6.64

1 year ago

3.6.63

1 year ago

3.6.62

1 year ago

3.6.61

1 year ago

3.6.60

1 year ago

3.6.59

1 year ago

3.5.59

1 year ago

3.5.58

1 year ago

3.5.57

1 year ago

3.5.56

1 year ago

3.5.55

1 year ago

3.5.54

1 year ago

3.5.53

1 year ago

3.5.52

1 year ago

3.5.51

1 year ago

3.5.50

1 year ago

3.5.49

1 year ago

3.5.48

1 year ago

3.5.47

1 year ago

3.4.47

1 year ago

3.4.46

1 year ago

3.4.45

1 year ago

3.4.44

1 year ago

3.4.43

1 year ago

3.4.42

1 year ago

3.4.41

1 year ago

3.4.40

1 year ago

3.4.39

1 year ago

3.4.38

1 year ago

3.4.37

1 year ago

3.4.36

1 year ago

3.4.35

1 year ago

3.4.34

1 year ago

3.3.34

1 year ago

3.3.33

1 year ago

3.2.33

1 year ago

3.2.32

1 year ago

3.2.31

1 year ago

3.2.30

1 year ago

3.2.29

1 year ago

3.2.28

1 year ago

3.2.27

1 year ago

3.2.26

1 year ago

3.2.25

1 year ago

3.2.24

1 year ago

3.2.23

1 year ago

3.2.22

1 year ago

3.2.21

1 year ago

3.2.20

1 year ago

3.2.19

1 year ago

3.2.18

1 year ago

3.1.18

1 year ago

3.1.17

1 year ago

3.1.16

1 year ago

3.1.15

1 year ago

3.1.14

1 year ago

3.1.13

1 year ago

3.1.12

1 year ago

2.1.12

1 year ago

2.1.11

1 year ago

2.1.10

1 year ago

1.1.10

1 year ago

1.0.10

1 year ago

1.0.9

1 year ago

1.0.8

1 year ago

1.0.7

1 year ago

1.0.6

1 year ago

1.0.5

1 year ago

1.0.4

1 year ago

1.0.3

1 year ago

1.0.2

1 year ago

1.0.1

1 year ago

1.0.0

1 year ago