217 lines
6.8 KiB
JavaScript
217 lines
6.8 KiB
JavaScript
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"use strict";
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/**
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* @license
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* Copyright 2016 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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Object.defineProperty(exports, "__esModule", { value: true });
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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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function arrayify(arg) {
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if (Array.isArray(arg)) {
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return arg;
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}
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else if (arg != null) {
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return [arg];
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}
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else {
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return [];
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}
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}
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exports.arrayify = arrayify;
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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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function objectify(arg) {
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if (typeof arg === "object" && arg != null) {
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return arg;
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}
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else {
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return {};
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}
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}
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exports.objectify = objectify;
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function hasOwnProperty(arg, key) {
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return Object.prototype.hasOwnProperty.call(arg, key);
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}
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exports.hasOwnProperty = hasOwnProperty;
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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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function camelize(stringWithHyphens) {
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return stringWithHyphens.replace(/-(.)/g, function (_, nextLetter) { return nextLetter.toUpperCase(); });
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}
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exports.camelize = camelize;
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function isUpperCase(str) {
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return str === str.toUpperCase();
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}
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exports.isUpperCase = isUpperCase;
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function isLowerCase(str) {
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return str === str.toLowerCase();
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}
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exports.isLowerCase = isLowerCase;
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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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function dedent(strings) {
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var values = [];
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for (var _i = 1; _i < arguments.length; _i++) {
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values[_i - 1] = arguments[_i];
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}
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var fullString = strings.reduce(function (accumulator, str, i) {
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return "" + accumulator + values[i - 1] + str;
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});
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// match all leading spaces/tabs at the start of each line
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var match = fullString.match(/^[ \t]*(?=\S)/gm);
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if (match === null) {
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// e.g. if the string is empty or all whitespace.
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return fullString;
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}
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// find the smallest indent, we don't want to remove all leading whitespace
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var indent = Math.min.apply(Math, match.map(function (el) { return el.length; }));
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var regexp = new RegExp("^[ \\t]{" + indent + "}", "gm");
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fullString = indent > 0 ? fullString.replace(regexp, "") : fullString;
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return fullString;
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}
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exports.dedent = dedent;
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/**
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* Strip comments from file content.
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*/
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function stripComments(content) {
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/**
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* First capturing group matches double quoted string
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* Second matches single quotes string
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* Third matches block comments
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* Fourth matches line comments
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*/
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var regexp = /("(?:[^\\\"]*(?:\\.)?)*")|('(?:[^\\\']*(?:\\.)?)*')|(\/\*(?:\r?\n|.)*?\*\/)|(\/{2,}.*?(?:(?:\r?\n)|$))/g;
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var result = content.replace(regexp, function (match, _m1, _m2, m3, m4) {
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// Only one of m1, m2, m3, m4 matches
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if (m3 !== undefined) {
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// A block comment. Replace with nothing
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return "";
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}
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else if (m4 !== undefined) {
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// A line comment. If it ends in \r?\n then keep it.
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var length = m4.length;
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if (length > 2 && m4[length - 1] === "\n") {
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return m4[length - 2] === "\r" ? "\r\n" : "\n";
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}
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else {
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return "";
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}
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}
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else {
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// We match a string
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return match;
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}
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});
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return result;
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}
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exports.stripComments = stripComments;
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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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function escapeRegExp(re) {
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return re.replace(/[.+*?|^$[\]{}()\\]/g, "\\$&");
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}
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exports.escapeRegExp = escapeRegExp;
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function arraysAreEqual(a, b, eq) {
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return a === b || a !== undefined && b !== undefined && a.length === b.length && a.every(function (x, idx) { return eq(x, b[idx]); });
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}
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exports.arraysAreEqual = arraysAreEqual;
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/** Returns the first non-`undefined` result. */
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function find(inputs, getResult) {
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for (var _i = 0, inputs_1 = inputs; _i < inputs_1.length; _i++) {
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var element = inputs_1[_i];
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var result = getResult(element);
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if (result !== undefined) {
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return result;
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}
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}
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return undefined;
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}
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exports.find = find;
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/** Returns an array that is the concatenation of all output arrays. */
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function flatMap(inputs, getOutputs) {
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var out = [];
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for (var _i = 0, inputs_2 = inputs; _i < inputs_2.length; _i++) {
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var input = inputs_2[_i];
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out.push.apply(out, getOutputs(input));
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}
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return out;
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}
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exports.flatMap = flatMap;
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/** Returns an array of all outputs that are not `undefined`. */
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function mapDefined(inputs, getOutput) {
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var out = [];
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for (var _i = 0, inputs_3 = inputs; _i < inputs_3.length; _i++) {
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var input = inputs_3[_i];
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var output = getOutput(input);
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if (output !== undefined) {
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out.push(output);
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}
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}
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return out;
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}
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exports.mapDefined = mapDefined;
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function readBufferWithDetectedEncoding(buffer) {
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switch (detectBufferEncoding(buffer)) {
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case "utf8":
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return buffer.toString();
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case "utf8-bom":
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return buffer.toString("utf-8", 2);
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case "utf16le":
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return buffer.toString("utf16le", 2);
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case "utf16be":
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// Round down to nearest multiple of 2.
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var len = buffer.length & ~1; // tslint:disable-line no-bitwise
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// Flip all byte pairs, then read as little-endian.
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for (var i = 0; i < len; i += 2) {
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var temp = buffer[i];
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buffer[i] = buffer[i + 1];
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buffer[i + 1] = temp;
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}
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return buffer.toString("utf16le", 2);
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}
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}
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exports.readBufferWithDetectedEncoding = readBufferWithDetectedEncoding;
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function detectBufferEncoding(buffer, length) {
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if (length === void 0) { length = buffer.length; }
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if (length < 2) {
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return "utf8";
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}
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switch (buffer[0]) {
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case 0xEF:
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if (buffer[1] === 0xBB && length >= 3 && buffer[2] === 0xBF) {
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return "utf8-bom";
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}
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break;
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case 0xFE:
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if (buffer[1] === 0xFF) {
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return "utf16be";
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}
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break;
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case 0xFF:
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if (buffer[1] === 0xFE) {
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return "utf16le";
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}
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}
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return "utf8";
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}
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exports.detectBufferEncoding = detectBufferEncoding;
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