RockPaperScissors/node_modules/ow/dist/predicates/predicate.js
2021-11-30 22:03:51 +01:00

183 lines
6.7 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Predicate = exports.validatorSymbol = void 0;
const is_1 = require("@sindresorhus/is");
const argument_error_1 = require("../argument-error");
const not_1 = require("../operators/not");
const base_predicate_1 = require("./base-predicate");
const generate_argument_error_message_1 = require("../utils/generate-argument-error-message");
/**
@hidden
*/
exports.validatorSymbol = Symbol('validators');
/**
@hidden
*/
class Predicate {
constructor(type, options = {}) {
Object.defineProperty(this, "type", {
enumerable: true,
configurable: true,
writable: true,
value: type
});
Object.defineProperty(this, "options", {
enumerable: true,
configurable: true,
writable: true,
value: options
});
Object.defineProperty(this, "context", {
enumerable: true,
configurable: true,
writable: true,
value: {
validators: []
}
});
this.context = {
...this.context,
...this.options
};
const typeString = this.type.charAt(0).toLowerCase() + this.type.slice(1);
this.addValidator({
message: (value, label) => {
// We do not include type in this label as we do for other messages, because it would be redundant.
const label_ = label === null || label === void 0 ? void 0 : label.slice(this.type.length + 1);
// eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
return `Expected ${label_ || 'argument'} to be of type \`${this.type}\` but received type \`${is_1.default(value)}\``;
},
validator: value => is_1.default[typeString](value)
});
}
/**
@hidden
*/
[base_predicate_1.testSymbol](value, main, label, idLabel) {
// Create a map of labels -> received errors.
const errors = new Map();
for (const { validator, message } of this.context.validators) {
if (this.options.optional === true && value === undefined) {
continue;
}
let result;
try {
result = validator(value);
}
catch (error) {
// Any errors caught means validators couldn't process the input.
result = error;
}
if (result === true) {
continue;
}
const label2 = is_1.default.function_(label) ? label() : label;
const labelWithTick = (label2 && idLabel) ? `\`${label2}\`` : label2;
const label_ = labelWithTick ?
`${this.type} ${labelWithTick}` :
this.type;
const mapKey = label2 || this.type;
// Get the current errors encountered for this label.
const currentErrors = errors.get(mapKey);
// Pre-generate the error message that will be reported to the user.
const errorMessage = message(value, label_, result);
// If we already have any errors for this label.
if (currentErrors) {
// If we don't already have this error logged, add it.
currentErrors.add(errorMessage);
}
else {
// Set this label and error in the full map.
errors.set(mapKey, new Set([errorMessage]));
}
}
// If we have any errors to report, throw.
if (errors.size > 0) {
// Generate the `error.message` property.
const message = generate_argument_error_message_1.generateArgumentErrorMessage(errors);
throw new argument_error_1.ArgumentError(message, main, errors);
}
}
/**
@hidden
*/
get [exports.validatorSymbol]() {
return this.context.validators;
}
/**
Invert the following validators.
*/
get not() {
return not_1.not(this);
}
/**
Test if the value matches a custom validation function. The validation function should return an object containing a `validator` and `message`. If the `validator` is `false`, the validation fails and the `message` will be used as error message. If the `message` is a function, the function is invoked with the `label` as argument to let you further customize the error message.
@param customValidator - Custom validation function.
*/
validate(customValidator) {
return this.addValidator({
message: (_, label, error) => typeof error === 'string' ?
`(${label}) ${error}` :
error(label),
validator: value => {
const { message, validator } = customValidator(value);
if (validator) {
return true;
}
return message;
}
});
}
/**
Test if the value matches a custom validation function. The validation function should return `true` if the value passes the function. If the function either returns `false` or a string, the function fails and the string will be used as error message.
@param validator - Validation function.
*/
is(validator) {
return this.addValidator({
message: (value, label, error) => (error ?
`(${label}) ${error}` :
`Expected ${label} \`${value}\` to pass custom validation function`),
validator
});
}
/**
Provide a new error message to be thrown when the validation fails.
@param newMessage - Either a string containing the new message or a function returning the new message.
@example
```
ow('🌈', 'unicorn', ow.string.equals('🦄').message('Expected unicorn, got rainbow'));
//=> ArgumentError: Expected unicorn, got rainbow
```
@example
```
ow('🌈', ow.string.minLength(5).message((value, label) => `Expected ${label}, to have a minimum length of 5, got \`${value}\``));
//=> ArgumentError: Expected string, to be have a minimum length of 5, got `🌈`
```
*/
message(newMessage) {
const { validators } = this.context;
validators[validators.length - 1].message = (value, label) => {
if (typeof newMessage === 'function') {
return newMessage(value, label);
}
return newMessage;
};
return this;
}
/**
Register a new validator.
@param validator - Validator to register.
*/
addValidator(validator) {
this.context.validators.push(validator);
return this;
}
}
exports.Predicate = Predicate;