obstractor
v1.0.6
Published
typescript library for validate and transform object
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Maintainers
ysuzuki19Readme
validate and transform library for Object
Basic Usage
import { Obstract, Obstractor } from 'obstractor';
interface Person {
name: string;
age: number;
}
const person_obstract: Obstract = {
name: { type: 'string' },
age: { type: 'number', nullable: true, default: 0 },
};
const obstractor = new Obstractor<Person>(person_obstract, {
logging: false,
});
const target_with_age = { name: 'bomb', age: 2 };
const is_valid = obstractor.validate(target_with_age);
const target_without_age = { name: 'bomb' };
const is_valid = obstractor.validate(target_without_age);
// ok because "age" is nullable
if (is_valid) {
const transformed = obstractor.transform(target_with_age);
// set default value(0) on "age"
// {name: "bomb", age: 0}
}Supported Type
string, number, object, boolean
Instant Use
You can call abstractor-api more instantly.
const is_valid = instant_validate(obstract, target);
// return valid_or_not
const transformed = instant_transform(obstract, valid_target);
// return transformed from validated target
const transformed = instant_validate_transform(obstract, target);
// return transformed if valid
// return undefined if invalidAdvanced
Functional Condition
You can add condition by using function
const person_obstract: Obstract = {
name: { type: 'string', nullable: false },
age: {
type: 'number',
validate: (input: number) => [0 <= input, 'over-zero'], // second value is message for invalid log
nullable: true,
default: 0,
},
};
const obstractor = new Obstractor<Person>(person_obstract, {
logging: false,
});
const target_with_age = { name: 'bomb', age: 2 };
const is_valid = obstractor.validate(target);
const target_without_age = { name: 'bomb' };
const is_valid = obstractor.validate(target);
// ok because "age" is nullable
if (is_valid) {
const transformed = obstractor.transform(target);
// set default value(0) on "age"
// {name: "bomb", age: 0}
}Nested Obstract
import { instant_validate, Obstract } from 'obstractor';
interface Body {
height: number;
weight: number;
foot?: number;
}
const body_obstract: Obstract = {
height: {
type: 'number',
validate: (input: number) => [0 < input, 'over-zero'],
},
weight: {
type: 'number',
validate: (input: number) => [0 < input, 'over-zero'],
},
foot: {
type: 'number',
nullable: true,
},
};
interface Person {
name: string;
age: number;
body: Body;
}
const person_obstract: Obstract = {
name: {
type: 'string',
validate: (input: string) => [0 < input.length, 'non-empty'],
nullable: false,
},
body: {
type: 'object',
validate: (input: object) => [
instant_validate<Body>(body_obstract, input),
'body',
],
},
};
const target = {
name: 'bomb',
body: {
height: 170,
weight: 60,
},
};
const is_valid = instant_validate<Person>(person_obstract, target);
// is true