99 lines
3.7 KiB
JavaScript
99 lines
3.7 KiB
JavaScript
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"use strict";
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// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
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// See LICENSE in the project root for license information.
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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var desc = Object.getOwnPropertyDescriptor(m, k);
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if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
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desc = { enumerable: true, get: function() { return m[k]; } };
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}
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Object.defineProperty(o, k2, desc);
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}) : (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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o[k2] = m[k];
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}));
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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Object.defineProperty(o, "default", { enumerable: true, value: v });
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}) : function(o, v) {
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o["default"] = v;
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});
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var __importStar = (this && this.__importStar) || function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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__setModuleDefault(result, mod);
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return result;
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.SyntaxHelpers = void 0;
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const ts = __importStar(require("typescript"));
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/**
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* Helpers for validating various text string formats.
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*/
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class SyntaxHelpers {
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/**
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* Tests whether the input string is safe to use as an ECMAScript identifier without quotes.
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*
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* @remarks
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* For example:
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*
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* ```ts
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* class X {
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* public okay: number = 1;
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* public "not okay!": number = 2;
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* }
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* ```
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*
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* A precise check is extremely complicated and highly dependent on the ECMAScript standard version
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* and how faithfully the interpreter implements it. To keep things simple, `isSafeUnquotedMemberIdentifier()`
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* conservatively accepts any identifier that would be valid with ECMAScript 5, and returns false otherwise.
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*/
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static isSafeUnquotedMemberIdentifier(identifier) {
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if (identifier.length === 0) {
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return false; // cannot be empty
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}
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if (!ts.isIdentifierStart(identifier.charCodeAt(0), ts.ScriptTarget.ES5)) {
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return false;
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}
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for (let i = 1; i < identifier.length; i++) {
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if (!ts.isIdentifierPart(identifier.charCodeAt(i), ts.ScriptTarget.ES5)) {
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return false;
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}
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}
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return true;
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}
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/**
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* Given an arbitrary input string, return a regular TypeScript identifier name.
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*
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* @remarks
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* Example input: "api-extractor-lib1-test"
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* Example output: "apiExtractorLib1Test"
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*/
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static makeCamelCaseIdentifier(input) {
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const parts = input.split(/\W+/).filter((x) => x.length > 0);
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if (parts.length === 0) {
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return '_';
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}
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for (let i = 0; i < parts.length; ++i) {
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let part = parts[i];
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if (part.toUpperCase() === part) {
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// Preserve existing case unless the part is all upper-case
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part = part.toLowerCase();
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}
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if (i === 0) {
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// If the first part starts with a number, prepend "_"
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if (/[0-9]/.test(part.charAt(0))) {
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part = '_' + part;
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}
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}
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else {
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// Capitalize the first letter of each part, except for the first one
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part = part.charAt(0).toUpperCase() + part.slice(1);
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}
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parts[i] = part;
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}
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return parts.join('');
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}
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}
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exports.SyntaxHelpers = SyntaxHelpers;
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//# sourceMappingURL=SyntaxHelpers.js.map
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