@angular/core
Version:
Angular - the core framework
91 lines • 13.1 kB
JavaScript
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
// The functions in this file verify that the assumptions we are making
// about state in an instruction are correct before implementing any logic.
// They are meant only to be called in dev mode as sanity checks.
import { stringify } from './stringify';
export function assertNumber(actual, msg) {
if (!(typeof actual === 'number')) {
throwError(msg, typeof actual, 'number', '===');
}
}
export function assertNumberInRange(actual, minInclusive, maxInclusive) {
assertNumber(actual, 'Expected a number');
assertLessThanOrEqual(actual, maxInclusive, 'Expected number to be less than or equal to');
assertGreaterThanOrEqual(actual, minInclusive, 'Expected number to be greater than or equal to');
}
export function assertString(actual, msg) {
if (!(typeof actual === 'string')) {
throwError(msg, actual === null ? 'null' : typeof actual, 'string', '===');
}
}
export function assertEqual(actual, expected, msg) {
if (!(actual == expected)) {
throwError(msg, actual, expected, '==');
}
}
export function assertNotEqual(actual, expected, msg) {
if (!(actual != expected)) {
throwError(msg, actual, expected, '!=');
}
}
export function assertSame(actual, expected, msg) {
if (!(actual === expected)) {
throwError(msg, actual, expected, '===');
}
}
export function assertNotSame(actual, expected, msg) {
if (!(actual !== expected)) {
throwError(msg, actual, expected, '!==');
}
}
export function assertLessThan(actual, expected, msg) {
if (!(actual < expected)) {
throwError(msg, actual, expected, '<');
}
}
export function assertLessThanOrEqual(actual, expected, msg) {
if (!(actual <= expected)) {
throwError(msg, actual, expected, '<=');
}
}
export function assertGreaterThan(actual, expected, msg) {
if (!(actual > expected)) {
throwError(msg, actual, expected, '>');
}
}
export function assertGreaterThanOrEqual(actual, expected, msg) {
if (!(actual >= expected)) {
throwError(msg, actual, expected, '>=');
}
}
export function assertNotDefined(actual, msg) {
if (actual != null) {
throwError(msg, actual, null, '==');
}
}
export function assertDefined(actual, msg) {
if (actual == null) {
throwError(msg, actual, null, '!=');
}
}
export function throwError(msg, actual, expected, comparison) {
throw new Error(`ASSERTION ERROR: ${msg}` +
(comparison == null ? '' : ` [Expected=> ${expected} ${comparison} ${actual} <=Actual]`));
}
export function assertDomNode(node) {
// If we're in a worker, `Node` will not be defined.
assertEqual((typeof Node !== 'undefined' && node instanceof Node) ||
(typeof node === 'object' && node != null &&
node.constructor.name === 'WebWorkerRenderNode'), true, `The provided value must be an instance of a DOM Node but got ${stringify(node)}`);
}
export function assertDataInRange(arr, index) {
const maxLen = arr ? arr.length : 0;
assertLessThan(index, maxLen, `Index expected to be less than ${maxLen} but got ${index}`);
}
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All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n// The functions in this file verify that the assumptions we are making\n// about state in an instruction are correct before implementing any logic.\n// They are meant only to be called in dev mode as sanity checks.\n\nimport {stringify} from './stringify';\n\nexport function assertNumber(actual: any, msg: string): asserts actual is number {\n  if (!(typeof actual === 'number')) {\n    throwError(msg, typeof actual, 'number', '===');\n  }\n}\n\nexport function assertNumberInRange(\n    actual: any, minInclusive: number, maxInclusive: number): asserts actual is number {\n  assertNumber(actual, 'Expected a number');\n  assertLessThanOrEqual(actual, maxInclusive, 'Expected number to be less than or equal to');\n  assertGreaterThanOrEqual(actual, minInclusive, 'Expected number to be greater than or equal to');\n}\n\nexport function assertString(actual: any, msg: string): asserts actual is string {\n  if (!(typeof actual === 'string')) {\n    throwError(msg, actual === null ? 'null' : typeof actual, 'string', '===');\n  }\n}\n\nexport function assertEqual<T>(actual: T, expected: T, msg: string) {\n  if (!(actual == expected)) {\n    throwError(msg, actual, expected, '==');\n  }\n}\n\nexport function assertNotEqual<T>(actual: T, expected: T, msg: string): asserts actual is T {\n  if (!(actual != expected)) {\n    throwError(msg, actual, expected, '!=');\n  }\n}\n\nexport function assertSame<T>(actual: T, expected: T, msg: string): asserts actual is T {\n  if (!(actual === expected)) {\n    throwError(msg, actual, expected, '===');\n  }\n}\n\nexport function assertNotSame<T>(actual: T, expected: T, msg: string) {\n  if (!(actual !== expected)) {\n    throwError(msg, actual, expected, '!==');\n  }\n}\n\nexport function assertLessThan<T>(actual: T, expected: T, msg: string): asserts actual is T {\n  if (!(actual < expected)) {\n    throwError(msg, actual, expected, '<');\n  }\n}\n\nexport function assertLessThanOrEqual<T>(actual: T, expected: T, msg: string): asserts actual is T {\n  if (!(actual <= expected)) {\n    throwError(msg, actual, expected, '<=');\n  }\n}\n\nexport function assertGreaterThan<T>(actual: T, expected: T, msg: string): asserts actual is T {\n  if (!(actual > expected)) {\n    throwError(msg, actual, expected, '>');\n  }\n}\n\nexport function assertGreaterThanOrEqual<T>(\n    actual: T, expected: T, msg: string): asserts actual is T {\n  if (!(actual >= expected)) {\n    throwError(msg, actual, expected, '>=');\n  }\n}\n\nexport function assertNotDefined<T>(actual: T, msg: string) {\n  if (actual != null) {\n    throwError(msg, actual, null, '==');\n  }\n}\n\nexport function assertDefined<T>(actual: T|null|undefined, msg: string): asserts actual is T {\n  if (actual == null) {\n    throwError(msg, actual, null, '!=');\n  }\n}\n\nexport function throwError(msg: string): never;\nexport function throwError(msg: string, actual: any, expected: any, comparison: string): never;\nexport function throwError(msg: string, actual?: any, expected?: any, comparison?: string): never {\n  throw new Error(\n      `ASSERTION ERROR: ${msg}` +\n      (comparison == null ? '' : ` [Expected=> ${expected} ${comparison} ${actual} <=Actual]`));\n}\n\nexport function assertDomNode(node: any): asserts node is Node {\n  // If we're in a worker, `Node` will not be defined.\n  assertEqual(\n      (typeof Node !== 'undefined' && node instanceof Node) ||\n          (typeof node === 'object' && node != null &&\n           node.constructor.name === 'WebWorkerRenderNode'),\n      true, `The provided value must be an instance of a DOM Node but got ${stringify(node)}`);\n}\n\n\nexport function assertDataInRange(arr: any[], index: number) {\n  const maxLen = arr ? arr.length : 0;\n  assertLessThan(index, maxLen, `Index expected to be less than ${maxLen} but got ${index}`);\n}\n"]}