/**
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* @license
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* Copyright 2018 Palantir Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/// <reference types="node" />
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import * as ts from "typescript";
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/**
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* Enforces the invariant that the input is an array.
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*/
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export declare function arrayify<T>(arg?: T | T[]): T[];
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/**
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* @deprecated (no longer used)
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* Enforces the invariant that the input is an object.
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*/
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export declare function objectify(arg: any): any;
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export declare function hasOwnProperty(arg: {}, key: string): boolean;
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/**
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* Replace hyphens in a rule name by upper-casing the letter after them.
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* E.g. "foo-bar" -> "fooBar"
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*/
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export declare function camelize(stringWithHyphens: string): string;
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export declare function isUpperCase(str: string): boolean;
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export declare function isLowerCase(str: string): boolean;
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/**
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* Removes leading indents from a template string without removing all leading whitespace
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*/
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export declare function dedent(strings: TemplateStringsArray, ...values: any[]): string;
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/**
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* Strip comments from file content.
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*/
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export declare function stripComments(content: string): string;
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/**
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* Escapes all special characters in RegExp pattern to avoid broken regular expressions and ensure proper matches
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*/
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export declare function escapeRegExp(re: string): string;
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/** Return true if both parameters are equal. */
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export declare type Equal<T> = (a: T, b: T) => boolean;
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export declare function arraysAreEqual<T>(a: ReadonlyArray<T> | undefined, b: ReadonlyArray<T> | undefined, eq: Equal<T>): boolean;
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/** Returns the first non-`undefined` result. */
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export declare function find<T, U>(inputs: T[], getResult: (t: T) => U | undefined): U | undefined;
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/** Returns an array that is the concatenation of all output arrays. */
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export declare function flatMap<T, U>(inputs: ReadonlyArray<T>, getOutputs: (input: T, index: number) => ReadonlyArray<U>): U[];
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/** Returns an array of all outputs that are not `undefined`. */
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export declare function mapDefined<T, U>(inputs: ReadonlyArray<T>, getOutput: (input: T) => U | undefined): U[];
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export declare function readBufferWithDetectedEncoding(buffer: Buffer): string;
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export declare type Encoding = "utf8" | "utf8-bom" | "utf16le" | "utf16be";
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export declare function detectBufferEncoding(buffer: Buffer, length?: number): Encoding;
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export declare function denormalizeWinPath(path: string): string;
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export declare function isPascalCased(name: string): boolean;
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export declare function isCamelCased(name: string): boolean;
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export declare function isKebabCased(name: string): boolean;
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export declare function isSnakeCased(name: string): boolean;
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/**
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* Tries to resolve a package by name, optionally relative to a file path. If the
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* file path is under a symlink, it tries to resolve the package under both the real path and under
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* the symlink path.
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*/
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export declare function tryResolvePackage(packageName: string, relativeTo?: string): string | undefined;
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/**
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* Gets the full indentation of the provided node
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*/
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export declare function getIndentation(node: ts.Node, sourceFile: ts.SourceFile): string;
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/**
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* Creates x new lines with a proper indentation at the last one based on the provided node
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*/
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export declare function newLineWithIndentation(node: ts.Node, sourceFile: ts.SourceFile, linesCount?: number): string;
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/**
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* @deprecated Copied from tsutils 2.27.2. This will be removed once TSLint requires tsutils > 3.0.
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*/
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export declare function isFunctionScopeBoundary(node: ts.Node): boolean;
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