This is a TypeScript exported class, function, type and documentation parser. It outputs everything needed to automatically generate documentation and better understand a project's public API. Information is extracted using TypeScript's Compiler API.

import * as readts from 'readts';

var parser = new readts.Parser();

// Read configuration used in the project we want to analyze.
var config = parser.parseConfig('tsconfig.json');

// Modify configuration as needed, for example to avoid writing compiler output to disk.
config.options.noEmit = true;

// Parse the project.
var tree = parser.parse(config);

The output is a list of ModuleSpec objects, each with exported classes and interfaces (ClassSpec), functions (FunctionSpec) and variables (IdentifierSpec). Types of variables and function parameters are parsed to TypeSpec objects, pointing to correct ClassSpec objects if applicable. This allows cross-linking types to their definitions in generated documentation.

See charto/docts for a documentation generator using this parser.

Docs generated using docts

Class ClassSpec

Class or interface and its members.
Source code: <>

Methods:

new( ) ^{⇒ ClassSpec} <>
 ▪ spec ^SymbolSpec

Properties:

.name ^string
 Class name.
.pos ^SourcePos

.construct ^FunctionSpec
 Constructor function.
.index ^IndexSpec
 Index signature.
.methodList ^{FunctionSpec[]}
 Public methods.
.propertyList ^{IdentifierSpec[]}
 Public properties.
.extendList ^ClassSpec[]
 Class extends
.exports ^ModuleSpec
 Class exports
.doc ^string
 JSDoc comment.

Class EnumSpec

Enum and its members.
Source code: <>

Methods:

new( ) ^{⇒ EnumSpec} <>
 ▪ spec ^SymbolSpec
.addMember( ) ^{⇒ void} <>
 ▪ spec ^{IdentifierSpec}

Properties:

.name ^string
 Class name.
.pos ^SourcePos

.memberList ^{IdentifierSpec[]}
 Public properties.
.doc ^string
 JSDoc comment.

Interface FormatHooks

Hooks to change how parts of type definitions are converted to strings.
Source code: <>

Properties:

.unknown_? ^FormatHook
.ref_? ^FormatHook
.array_? ^FormatHook
.union_? ^FormatHook
.intersection_? ^FormatHook
.generic_? ^FormatHook

Class FunctionSpec

Function or method with any number of overloaded signatures.
Source code: <>

Methods:

new( ) ^{⇒ FunctionSpec} <>
 ▪ spec ^SymbolSpec

Properties:

.name ^string
 Function name.
.signatureList ^{SignatureSpec[]}
 List of signatures, one for each overload.

Class IdentifierSpec

Property, function / method parameter or variable.
Source code: <>

Properties:

.name ^string
 Identifier name.
.pos ^SourcePos
.type ^TypeSpec
 Type definition.
.value_? ^any
 Literal type value
.optional ^boolean
 Interface members and function / method parameters may be optional.
.doc ^string
 JSDoc comment.

Class IndexSpec

Index signature.
Source code: <>

Properties:

.signature ^TypeSpec
 Singature type.
.value ^TypeSpec
 Value type

Class ModuleSpec

Module or source file.
Source code: <>

Methods:

.isEmpty( ) ^{⇒ boolean} <>
 Test if nothing is exported.

Properties:

.enumList ^EnumSpec[]
 Definitions of exported enums.
.classList ^ClassSpec[]
 Definitions of exported classes.
.interfaceList ^ClassSpec[]
 Definitions of exported interfaces.
.functionList ^{FunctionSpec[]}
 Definitions of exported functions.
.variableList ^{IdentifierSpec[]}
 Definitions of exported variables.

Class Parser

Main parser class with public methods, also holding its internal state.
Source code: <>

Methods:

.parseConfig( ) ^{⇒ ParsedCommandLine} <>
 Parse a tsconfig.json file using TypeScript services API.
 ▪ tsconfigPath ^string
.parse( ) ^{⇒ ModuleSpec[]} <>
 Parse a TypeScript project using TypeScript services API and configuration.
 ▪ config ^{ParsedCommandLine}
 ▫ nameFilter_? ^{(pathName: string) => boolean}
 ▫ extension_? ^string

Interface RefSpec

Source code: <>

Properties:

.name_? ^string
.symbol_? ^Symbol
.class_? ^ClassSpec
.enum_? ^EnumSpec

Class SignatureSpec

Function or method signature defining input and output types.
Source code: <>

Methods:

new( ) ^{⇒ SignatureSpec} <>
 ▪ pos ^SourcePos
 ▪ returnType ^TypeSpec
 ▪ doc ^string

Properties:

.pos ^SourcePos
.paramList ^{IdentifierSpec[]}
 List of parameters.
.returnType ^TypeSpec
 Return type definition.
.doc ^string
 JSDoc comment.

Interface SourcePos

Source code: <>

Properties:

.sourcePath ^string
.firstLine ^number
.lastLine ^number

Class TypeSpec

Type definition.
Source code: <>

Methods:

.format( ) ^{⇒ string} <>
 Convert to string, with optional hooks replacing default formatting code.
 ▫ hooks_? ^FormatHooks
 ▫ needParens_? ^boolean

Properties:

.name ^string
 Name of the type, only present if not composed of other type or class etc.
.value_? ^{string | number}
 Value of the type, only present if literal type
.ref ^RefSpec
 Definition of what the type points to, if available.
.unionOf ^TypeSpec[]
 If the type is a union, list of the possible types.
.intersectionOf ^TypeSpec[]
 If the type is an intersection, list of the possible types.
.arrayOf ^TypeSpec
 If the type is an array, its element type.
.argumentList ^TypeSpec[]
 Arguments of a generic type.

The MIT License

Copyright (c) 2016 BusFaster Ltd