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// Type definitions for chai 4.0.0
// Project: http://chaijs.com/
// Definitions by: Jed Mao <https://github.com/jedmao/>,
// Bart van der Schoor <https://github.com/Bartvds>,
// Andrew Brown <https://github.com/AGBrown>,
// Olivier Chevet <https://github.com/olivr70>,
// Matt Wistrand <https://github.com/mwistrand>,
// Josh Goldberg <https://github.com/joshuakgoldberg>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// <reference types="assertion-error"/>
// tslint:disable:no-namespace member-ordering ban-types unified-signatures variable-name callable-types
declare namespace Chai {
interface ChaiStatic {
expect: ExpectStatic;
should(): Should;
/**
* Provides a way to extend the internals of Chai
*/
use(fn: (chai: any, utils: any) => void): ChaiStatic;
assert: AssertStatic;
config: Config;
AssertionError: typeof AssertionError;
version: string;
}
export interface ExpectStatic extends AssertionStatic {
fail(actual?: any, expected?: any, message?: string, operator?: Operator): void;
}
export interface AssertStatic extends Assert {}
type AssertionStatic = (target: any, message?: string) => Assertion;
export type Operator = string; // "==" | "===" | ">" | ">=" | "<" | "<=" | "!=" | "!==";
export type OperatorComparable = boolean | null | number | string | undefined | Date;
interface ShouldAssertion {
equal(value1: any, value2: any, message?: string): void;
Throw: ShouldThrow;
throw: ShouldThrow;
exist(value: any, message?: string): void;
}
interface Should extends ShouldAssertion {
not: ShouldAssertion;
fail(actual: any, expected: any, message?: string, operator?: Operator): void;
}
interface ShouldThrow {
(actual: Function): void;
(actual: Function, expected: string | RegExp, message?: string): void;
(actual: Function, constructor: Error | Function, expected?: string | RegExp, message?: string): void;
}
interface Assertion extends LanguageChains, NumericComparison, TypeComparison {
not: Assertion;
deep: Deep;
nested: Nested;
any: KeyFilter;
all: KeyFilter;
a: TypeComparison;
an: TypeComparison;
include: Include;
includes: Include;
contain: Include;
contains: Include;
ok: Assertion;
true: () => Assertion;
false: () => Assertion;
null: () => Assertion;
undefined: () => Assertion;
NaN: Assertion;
exist: Assertion;
empty: Assertion;
arguments: Assertion;
Arguments: Assertion;
equal: Equal;
equals: Equal;
eq: Equal;
eql: Equal;
eqls: Equal;
property: Property;
ownProperty: OwnProperty;
haveOwnProperty: OwnProperty;
ownPropertyDescriptor: OwnPropertyDescriptor;
haveOwnPropertyDescriptor: OwnPropertyDescriptor;
length: Length;
lengthOf: Length;
match: Match;
matches: Match;
string(string: string, message?: string): Assertion;
keys: Keys;
key(string: string): Assertion;
throw: (message?: string) => Assertion;
throws: Throw;
Throw: Throw;
respondTo: RespondTo;
respondsTo: RespondTo;
itself: Assertion;
satisfy: Satisfy;
satisfies: Satisfy;
closeTo: CloseTo;
approximately: CloseTo;
members: Members;
increase: PropertyChange;
increases: PropertyChange;
decrease: PropertyChange;
decreases: PropertyChange;
change: PropertyChange;
changes: PropertyChange;
extensible: Assertion;
sealed: Assertion;
frozen: Assertion;
oneOf(list: any[], message?: string): Assertion;
}
interface LanguageChains {
to: Assertion;
be: Assertion;
been: Assertion;
is: Assertion;
that: Assertion;
which: Assertion;
and: Assertion;
has: Assertion;
have: Assertion;
with: Assertion;
at: Assertion;
of: Assertion;
same: Assertion;
}
interface NumericComparison {
above: NumberComparer;
gt: NumberComparer;
greaterThan: NumberComparer;
least: NumberComparer;
gte: NumberComparer;
below: NumberComparer;
lt: NumberComparer;
lessThan: NumberComparer;
most: NumberComparer;
lte: NumberComparer;
within(start: number, finish: number, message?: string): Assertion;
}
interface NumberComparer {
(value: number, message?: string): Assertion;
}
interface TypeComparison {
(type: string, message?: string): Assertion;
instanceof: InstanceOf;
instanceOf: InstanceOf;
}
interface InstanceOf {
(constructor: Object, message?: string): Assertion;
}
interface CloseTo {
(expected: number, delta: number, message?: string): Assertion;
}
interface Nested {
include: Include;
property: Property;
members: Members;
}
interface Deep {
equal: Equal;
equals: Equal;
eq: Equal;
include: Include;
property: Property;
members: Members;
}
interface KeyFilter {
keys: Keys;
}
interface Equal {
(value: any, message?: string): Assertion;
}
interface Property {
(name: string, value?: any, message?: string): Assertion;
}
interface OwnProperty {
(name: string, message?: string): Assertion;
}
interface OwnPropertyDescriptor {
(name: string, descriptor: PropertyDescriptor, message?: string): Assertion;
(name: string, message?: string): Assertion;
}
interface Length extends LanguageChains, NumericComparison {
(length: number, message?: string): Assertion;
}
interface Include {
(value: Object | string | number, message?: string): Assertion;
keys: Keys;
members: Members;
any: KeyFilter;
all: KeyFilter;
}
interface Match {
(regexp: RegExp | string, message?: string): Assertion;
}
interface Keys {
(...keys: string[]): Assertion;
(keys: any[]): Assertion;
(keys: Object): Assertion;
}
interface Throw {
(): Assertion;
(expected: string, message?: string): Assertion;
(expected: RegExp, message?: string): Assertion;
(constructor: Error, expected?: string, message?: string): Assertion;
(constructor: Error, expected?: RegExp, message?: string): Assertion;
(constructor: Function, expected?: string, message?: string): Assertion;
(constructor: Function, expected?: RegExp, message?: string): Assertion;
}
interface RespondTo {
(method: string, message?: string): Assertion;
}
interface Satisfy {
(matcher: Function, message?: string): Assertion;
}
interface Members {
(set: any[], message?: string): Assertion;
}
interface PropertyChange {
(object: Object, property: string, message?: string): Assertion;
}
export interface Assert {
/**
* @param expression Expression to test for truthiness.
* @param message Message to display on error.
*/
(expression: any, message?: string): void;
/**
* Throws a failure.
*
* @type T Type of the objects.
* @param actual Actual value.
* @param expected Potential expected value.
* @param message Message to display on error.
* @param operator Comparison operator, if not strict equality.
* @remarks Node.js assert module-compatible.
*/
fail<T>(actual?: T, expected?: T, message?: string, operator?: Operator): void;
/**
* Asserts that object is truthy.
*
* @type T Type of object.
* @param object Object to test.
* @param message Message to display on error.
*/
isOk<T>(value: T, message?: string): void;
/**
* Asserts that object is truthy.
*
* @type T Type of object.
* @param object Object to test.
* @param message Message to display on error.
*/
ok<T>(value: T, message?: string): void;
/**
* Asserts that object is falsy.
*
* @type T Type of object.
* @param object Object to test.
* @param message Message to display on error.
*/
isNotOk<T>(value: T, message?: string): void;
/**
* Asserts that object is falsy.
*
* @type T Type of object.
* @param object Object to test.
* @param message Message to display on error.
*/
notOk<T>(value: T, message?: string): void;
/**
* Asserts non-strict equality (==) of actual and expected.
*
* @type T Type of the objects.
* @param actual Actual value.
* @param expected Potential expected value.
* @param message Message to display on error.
*/
equal<T>(actual: T, expected: T, message?: string): void;
/**
* Asserts non-strict inequality (==) of actual and expected.
*
* @type T Type of the objects.
* @param actual Actual value.
* @param expected Potential expected value.
* @param message Message to display on error.
*/
notEqual<T>(actual: T, expected: T, message?: string): void;
/**
* Asserts strict equality (===) of actual and expected.
*
* @type T Type of the objects.
* @param actual Actual value.
* @param expected Potential expected value.
* @param message Message to display on error.
*/
strictEqual<T>(actual: T, expected: T, message?: string): void;
/**
* Asserts strict inequality (==) of actual and expected.
*
* @type T Type of the objects.
* @param actual Actual value.
* @param expected Potential expected value.
* @param message Message to display on error.
*/
notStrictEqual<T>(actual: T, expected: T, message?: string): void;
/**
* Asserts that actual is deeply equal to expected.
*
* @type T Type of the objects.
* @param actual Actual value.
* @param expected Potential expected value.
* @param message Message to display on error.
*/
deepEqual<T>(actual: T, expected: T, message?: string): void;
/**
* Asserts that actual is not deeply equal to expected.
*
* @type T Type of the objects.
* @param actual Actual value.
* @param expected Potential expected value.
* @param message Message to display on error.
*/
notDeepEqual<T>(actual: T, expected: T, message?: string): void;
/**
* Asserts valueToCheck is strictly greater than (>) valueToBeAbove.
*
* @param valueToCheck Actual value.
* @param valueToBeAbove Minimum Potential expected value.
* @param message Message to display on error.
*/
isAbove(valueToCheck: number, valueToBeAbove: number, message?: string): void;
/**
* Asserts valueToCheck is greater than or equal to (>=) valueToBeAtLeast.
*
* @param valueToCheck Actual value.
* @param valueToBeAtLeast Minimum Potential expected value.
* @param message Message to display on error.
*/
isAtLeast(valueToCheck: number, valueToBeAtLeast: number, message?: string): void;
/**
* Asserts valueToCheck is strictly less than (<) valueToBeBelow.
*
* @param valueToCheck Actual value.
* @param valueToBeBelow Minimum Potential expected value.
* @param message Message to display on error.
*/
isBelow(valueToCheck: number, valueToBeBelow: number, message?: string): void;
/**
* Asserts valueToCheck is greater than or equal to (>=) valueToBeAtMost.
*
* @param valueToCheck Actual value.
* @param valueToBeAtMost Minimum Potential expected value.
* @param message Message to display on error.
*/
isAtMost(valueToCheck: number, valueToBeAtMost: number, message?: string): void;
/**
* Asserts that value is true.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isTrue<T>(value: T, message?: string): void;
/**
* Asserts that value is false.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isFalse<T>(value: T, message?: string): void;
/**
* Asserts that value is not true.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotTrue<T>(value: T, message?: string): void;
/**
* Asserts that value is not false.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotFalse<T>(value: T, message?: string): void;
/**
* Asserts that value is null.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNull<T>(value: T, message?: string): void;
/**
* Asserts that value is not null.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotNull<T>(value: T, message?: string): void;
/**
* Asserts that value is not null.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNaN<T>(value: T, message?: string): void;
/**
* Asserts that value is not null.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotNaN<T>(value: T, message?: string): void;
/**
* Asserts that value is undefined.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isUndefined<T>(value: T, message?: string): void;
/**
* Asserts that value is not undefined.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isDefined<T>(value: T, message?: string): void;
/**
* Asserts that value is a function.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isFunction<T>(value: T, message?: string): void;
/**
* Asserts that value is not a function.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotFunction<T>(value: T, message?: string): void;
/**
* Asserts that value is an object of type 'Object'
* (as revealed by Object.prototype.toString).
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
* @remarks The assertion does not match subclassed objects.
*/
isObject<T>(value: T, message?: string): void;
/**
* Asserts that value is not an object of type 'Object'
* (as revealed by Object.prototype.toString).
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotObject<T>(value: T, message?: string): void;
/**
* Asserts that value is an array.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isArray<T>(value: T, message?: string): void;
/**
* Asserts that value is not an array.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotArray<T>(value: T, message?: string): void;
/**
* Asserts that value is a string.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isString<T>(value: T, message?: string): void;
/**
* Asserts that value is not a string.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotString<T>(value: T, message?: string): void;
/**
* Asserts that value is a number.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNumber<T>(value: T, message?: string): void;
/**
* Asserts that value is not a number.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotNumber<T>(value: T, message?: string): void;
/**
* Asserts that value is a boolean.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isBoolean<T>(value: T, message?: string): void;
/**
* Asserts that value is not a boolean.
*
* @type T Type of value.
* @param value Actual value.
* @param message Message to display on error.
*/
isNotBoolean<T>(value: T, message?: string): void;
/**
* Asserts that value's type is name, as determined by Object.prototype.toString.
*
* @type T Type of value.
* @param value Actual value.
* @param name Potential expected type name of value.
* @param message Message to display on error.
*/
typeOf<T>(value: T, name: string, message?: string): void;
/**
* Asserts that value's type is not name, as determined by Object.prototype.toString.
*
* @type T Type of value.
* @param value Actual value.
* @param name Potential expected type name of value.
* @param message Message to display on error.
*/
notTypeOf<T>(value: T, name: string, message?: string): void;
/**
* Asserts that value is an instance of constructor.
*
* @type T Type of value.
* @param value Actual value.
* @param constructor Potential expected contructor of value.
* @param message Message to display on error.
*/
instanceOf<T>(value: T, constructor: Function, message?: string): void;
/**
* Asserts that value is not an instance of constructor.
*
* @type T Type of value.
* @param value Actual value.
* @param constructor Potential expected contructor of value.
* @param message Message to display on error.
*/
notInstanceOf<T>(value: T, type: Function, message?: string): void;
/**
* Asserts that haystack includes needle.
*
* @param haystack Container string.
* @param needle Potential expected substring of haystack.
* @param message Message to display on error.
*/
include(haystack: string, needle: string, message?: string): void;
/**
* Asserts that haystack includes needle.
*
* @type T Type of values in haystack.
* @param haystack Container array.
* @param needle Potential value contained in haystack.
* @param message Message to display on error.
*/
include<T>(haystack: T[], needle: T, message?: string): void;
/**
* Asserts that haystack does not include needle.
*
* @param haystack Container string.
* @param needle Potential expected substring of haystack.
* @param message Message to display on error.
*/
notInclude(haystack: string, needle: any, message?: string): void;
/**
* Asserts that haystack does not include needle.
*
* @type T Type of values in haystack.
* @param haystack Container array.
* @param needle Potential value contained in haystack.
* @param message Message to display on error.
*/
notInclude(haystack: any[], needle: any, message?: string): void;
/**
* Asserts that value matches the regular expression regexp.
*
* @param value Actual value.
* @param regexp Potential match of value.
* @param message Message to display on error.
*/
match(value: string, regexp: RegExp, message?: string): void;
/**
* Asserts that value does not match the regular expression regexp.
*
* @param value Actual value.
* @param regexp Potential match of value.
* @param message Message to display on error.
*/
notMatch(expected: any, regexp: RegExp, message?: string): void;
/**
* Asserts that object has a property named by property.
*
* @type T Type of object.
* @param object Container object.
* @param property Potential contained property of object.
* @param message Message to display on error.
*/
property<T>(object: T, property: string /* keyof T */, message?: string): void;
/**
* Asserts that object has a property named by property.
*
* @type T Type of object.
* @param object Container object.
* @param property Potential contained property of object.
* @param message Message to display on error.
*/
notProperty<T>(object: T, property: string /* keyof T */, message?: string): void;
/**
* Asserts that object has a property named by property, which can be a string
* using dot- and bracket-notation for deep reference.
*
* @type T Type of object.
* @param object Container object.
* @param property Potential contained property of object.
* @param message Message to display on error.
*/
deepProperty<T>(object: T, property: string, message?: string): void;
/**
* Asserts that object does not have a property named by property, which can be a
* string using dot- and bracket-notation for deep reference.
*
* @type T Type of object.
* @param object Container object.
* @param property Potential contained property of object.
* @param message Message to display on error.
*/
notDeepProperty<T>(object: T, property: string, message?: string): void;
/**
* Asserts that object has a property named by property with value given by value.
*
* @type T Type of object.
* @type V Type of value.
* @param object Container object.
* @param property Potential contained property of object.
* @param value Potential expected property value.
* @param message Message to display on error.
*/
propertyVal<T, V>(object: T, property: string /* keyof T */, value: V, message?: string): void;
/**
* Asserts that object has a property named by property with value given by value.
*
* @type T Type of object.
* @type V Type of value.
* @param object Container object.
* @param property Potential contained property of object.
* @param value Potential expected property value.
* @param message Message to display on error.
*/
propertyNotVal<T, V>(object: T, property: string /* keyof T */, value: V, message?: string): void;
/**
* Asserts that object has a property named by property, which can be a string
* using dot- and bracket-notation for deep reference.
*
* @type T Type of object.
* @type V Type of value.
* @param object Container object.
* @param property Potential contained property of object.
* @param value Potential expected property value.
* @param message Message to display on error.
*/
deepPropertyVal<T, V>(object: T, property: string, value: V, message?: string): void;
/**
* Asserts that object does not have a property named by property, which can be a
* string using dot- and bracket-notation for deep reference.
*
* @type T Type of object.
* @type V Type of value.
* @param object Container object.
* @param property Potential contained property of object.
* @param value Potential expected property value.
* @param message Message to display on error.
*/
deepPropertyNotVal<T, V>(object: T, property: string, value: V, message?: string): void;
/**
* Asserts that object has a length property with the expected value.
*
* @type T Type of object.
* @param object Container object.
* @param length Potential expected length of object.
* @param message Message to display on error.
*/
lengthOf<T extends { readonly length?: number }>(object: T, length: number, message?: string): void;
/**
* Asserts that fn will throw an error.
*
* @param fn Function that may throw.
* @param message Message to display on error.
*/
throw(fn: Function, message?: string): void;
/**
* Asserts that function will throw an error with message matching regexp.
*
* @param fn Function that may throw.
* @param regExp Potential expected message match.
* @param message Message to display on error.
*/
throw(fn: Function, regExp: RegExp): void;
/**
* Asserts that function will throw an error that is an instance of constructor.
*
* @param fn Function that may throw.
* @param constructor Potential expected error constructor.
* @param message Message to display on error.
*/
throw(fn: Function, constructor: Function, message?: string): void;
/**
* Asserts that function will throw an error that is an instance of constructor
* and an error with message matching regexp.
*
* @param fn Function that may throw.
* @param constructor Potential expected error constructor.
* @param message Message to display on error.
*/
throw(fn: Function, constructor: Function, regExp: RegExp): void;
/**
* Asserts that fn will throw an error.
*
* @param fn Function that may throw.
* @param message Message to display on error.
*/
throws(fn: Function, message?: string): void;
/**
* Asserts that function will throw an error with message matching regexp.
*
* @param fn Function that may throw.
* @param regExp Potential expected message match.
* @param message Message to display on error.
*/
throws(fn: Function, regExp: RegExp, message?: string): void;
/**
* Asserts that function will throw an error that is an instance of constructor.
*
* @param fn Function that may throw.
* @param constructor Potential expected error constructor.
* @param message Message to display on error.
*/
throws(fn: Function, errType: Function, message?: string): void;
/**
* Asserts that function will throw an error that is an instance of constructor
* and an error with message matching regexp.
*
* @param fn Function that may throw.
* @param constructor Potential expected error constructor.
* @param message Message to display on error.
*/
throws(fn: Function, errType: Function, regExp: RegExp): void;
/**
* Asserts that fn will throw an error.
*
* @param fn Function that may throw.
* @param message Message to display on error.
*/
Throw(fn: Function, message?: string): void;
/**
* Asserts that function will throw an error with message matching regexp.
*
* @param fn Function that may throw.
* @param regExp Potential expected message match.
* @param message Message to display on error.
*/
Throw(fn: Function, regExp: RegExp): void;
/**
* Asserts that function will throw an error that is an instance of constructor.
*
* @param fn Function that may throw.
* @param constructor Potential expected error constructor.
* @param message Message to display on error.
*/
Throw(fn: Function, errType: Function, message?: string): void;
/**
* Asserts that function will throw an error that is an instance of constructor
* and an error with message matching regexp.
*
* @param fn Function that may throw.
* @param constructor Potential expected error constructor.
* @param message Message to display on error.
*/
Throw(fn: Function, errType: Function, regExp: RegExp): void;
/**
* Asserts that fn will not throw an error.
*
* @param fn Function that may throw.
* @param message Message to display on error.
*/
doesNotThrow(fn: Function, message?: string): void;
/**
* Asserts that function will throw an error with message matching regexp.
*
* @param fn Function that may throw.
* @param regExp Potential expected message match.
* @param message Message to display on error.
*/
doesNotThrow(fn: Function, regExp: RegExp): void;
/**
* Asserts that function will throw an error that is an instance of constructor.
*
* @param fn Function that may throw.
* @param constructor Potential expected error constructor.
* @param message Message to display on error.
*/
doesNotThrow(fn: Function, errType: Function, message?: string): void;
/**
* Asserts that function will throw an error that is an instance of constructor
* and an error with message matching regexp.
*
* @param fn Function that may throw.
* @param constructor Potential expected error constructor.
* @param message Message to display on error.
*/
doesNotThrow(fn: Function, errType: Function, regExp: RegExp): void;
/**
* Compares two values using operator.
*
* @param val1 Left value during comparison.
* @param operator Comparison operator.
* @param val2 Right value during comparison.
* @param message Message to display on error.
*/
operator(val1: OperatorComparable, operator: Operator, val2: OperatorComparable, message?: string): void;
/**
* Asserts that the target is equal to expected, to within a +/- delta range.
*
* @param actual Actual value
* @param expected Potential expected value.
* @param delta Maximum differenced between values.
* @param message Message to display on error.
*/
closeTo(actual: number, expected: number, delta: number, message?: string): void;
/**
* Asserts that the target is equal to expected, to within a +/- delta range.
*
* @param actual Actual value
* @param expected Potential expected value.
* @param delta Maximum differenced between values.
* @param message Message to display on error.
*/
approximately(act: number, exp: number, delta: number, message?: string): void;
/**
* Asserts that set1 and set2 have the same members. Order is not take into account.
*
* @type T Type of set values.
* @param set1 Actual set of values.
* @param set2 Potential expected set of values.
* @param message Message to display on error.
*/
sameMembers<T>(set1: T[], set2: T[], message?: string): void;
/**
* Asserts that set1 and set2 have the same members using deep equality checking.
* Order is not take into account.
*
* @type T Type of set values.
* @param set1 Actual set of values.
* @param set2 Potential expected set of values.
* @param message Message to display on error.
*/
sameDeepMembers<T>(set1: T[], set2: T[], message?: string): void;
/**
* Asserts that subset is included in superset. Order is not take into account.
*
* @type T Type of set values.
* @param superset Actual set of values.
* @param subset Potential contained set of values.
* @param message Message to display on error.
*/
includeMembers<T>(superset: T[], subset: T[], message?: string): void;
/**
* Asserts that subset is included in superset using deep equality checking.
* Order is not take into account.
*
* @type T Type of set values.
* @param superset Actual set of values.
* @param subset Potential contained set of values.
* @param message Message to display on error.
*/
includeDeepMembers<T>(superset: T[], subset: T[], message?: string): void;
/**
* Asserts that non-object, non-array value inList appears in the flat array list.
*
* @type T Type of list values.
* @param inList Value expected to be in the list.
* @param list List of values.
* @param message Message to display on error.
*/
oneOf<T>(inList: T, list: T[], message?: string): void;
/**
* Asserts that a function changes the value of a property.
*
* @type T Type of object.
* @param modifier Function to run.
* @param object Container object.
* @param property Property of object expected to be modified.
* @param message Message to display on error.
*/
changes<T>(modifier: Function, object: T, property: string /* keyof T */, message?: string): void;
/**
* Asserts that a function does not change the value of a property.
*
* @type T Type of object.
* @param modifier Function to run.
* @param object Container object.
* @param property Property of object expected not to be modified.
* @param message Message to display on error.
*/
doesNotChange<T>(modifier: Function, object: T, property: string /* keyof T */, message?: string): void;
/**
* Asserts that a function increases an object property.
*
* @type T Type of object.
* @param modifier Function to run.
* @param object Container object.
* @param property Property of object expected to be increased.
* @param message Message to display on error.
*/
increases<T>(modifier: Function, object: T, property: string /* keyof T */, message?: string): void;
/**
* Asserts that a function does not increase an object property.
*
* @type T Type of object.
* @param modifier Function to run.
* @param object Container object.
* @param property Property of object expected not to be increased.
* @param message Message to display on error.
*/
doesNotIncrease<T>(modifier: Function, object: T, property: string /* keyof T */, message?: string): void;
/**
* Asserts that a function decreases an object property.
*
* @type T Type of object.
* @param modifier Function to run.
* @param object Container object.
* @param property Property of object expected to be decreased.
* @param message Message to display on error.
*/
decreases<T>(modifier: Function, object: T, property: string /* keyof T */, message?: string): void;
/**
* Asserts that a function does not decrease an object property.
*
* @type T Type of object.
* @param modifier Function to run.
* @param object Container object.
* @param property Property of object expected not to be decreased.
* @param message Message to display on error.
*/
doesNotDecrease<T>(modifier: Function, object: T, property: string /* keyof T */, message?: string): void;
/**
* Asserts if value is not a false value, and throws if it is a true value.
*
* @type T Type of object.
* @param object Actual value.
* @param message Message to display on error.
* @remarks This is added to allow for chai to be a drop-in replacement for
* Nodes assert class.
*/
ifError<T>(object: T, message?: string): void;
/**
* Asserts that object is extensible (can have new properties added to it).
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
isExtensible<T>(object: T, message?: string): void;
/**
* Asserts that object is extensible (can have new properties added to it).
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
extensible<T>(object: T, message?: string): void;
/**
* Asserts that object is not extensible.
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
isNotExtensible<T>(object: T, message?: string): void;
/**
* Asserts that object is not extensible.
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
notExtensible<T>(object: T, message?: string): void;
/**
* Asserts that object is sealed (can have new properties added to it
* and its existing properties cannot be removed).
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
isSealed<T>(object: T, message?: string): void;
/**
* Asserts that object is sealed (can have new properties added to it
* and its existing properties cannot be removed).
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
sealed<T>(object: T, message?: string): void;
/**
* Asserts that object is not sealed.
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
isNotSealed<T>(object: T, message?: string): void;
/**
* Asserts that object is not sealed.
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
notSealed<T>(object: T, message?: string): void;
/**
* Asserts that object is frozen (cannot have new properties added to it
* and its existing properties cannot be removed).
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
isFrozen<T>(object: T, message?: string): void;
/**
* Asserts that object is frozen (cannot have new properties added to it
* and its existing properties cannot be removed).
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
frozen<T>(object: T, message?: string): void;
/**
* Asserts that object is not frozen (cannot have new properties added to it
* and its existing properties cannot be removed).
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
isNotFrozen<T>(object: T, message?: string): void;
/**
* Asserts that object is not frozen (cannot have new properties added to it
* and its existing properties cannot be removed).
*
* @type T Type of object
* @param object Actual value.
* @param message Message to display on error.
*/
notFrozen<T>(object: T, message?: string): void;
}
export interface Config {
/**
* Default: false
*/
includeStack: boolean;
/**
* Default: true
*/
showDiff: boolean;
/**
* Default: 40
*/
truncateThreshold: number;
}
export class AssertionError {
constructor(message: string, _props?: any, ssf?: Function);
public name: string;
public message: string;
public showDiff: boolean;
public stack: string;
}
}
declare const chai: Chai.ChaiStatic;
declare module 'chai' {
export = chai;
}
interface Object {
should: Chai.Assertion;
}