dsherret

// this could be improved... (ex. ignore interfaces/type aliases that describe a parameter type in the same file)
import { Project, TypeGuards, Node } from "ts-morph";

const project = new Project({ tsConfigFilePath: "tsconfig.json" });

for (const file of project.getSourceFiles()) {
    file.forEachChild(child => {
        if (TypeGuards.isVariableStatement(child)) {
            if (isExported(child))
                child.getDeclarations().forEach(checkNode);

dsherret

// NOTE: This is now rolled up in a package and supports more scenarios: https://github.com/dsherret/using-statement

interface IDisposable {
    dispose();
}

function using<T extends IDisposable>(resource: T, func: (resource: T) => void) {
    try {
        func(resource);
    } finally {

dsherret

/**
 * Caches the return value of get accessors and methods.
 *
 * Notes:
 * - Doesn't really make sense to put this on a method with parameters.
 * - Creates an obscure non-enumerable property on the instance to store the memoized value.
 * - Could use a WeakMap, but this way has support in old environments.
 */
export function Memoize(target: any, propertyName: string, descriptor: TypedPropertyDescriptor<any>) {
    if (descriptor.value != null) {

dsherret

import { tsquery } from "@phenomnomnominal/tsquery";
import { Node } from "ts-morph";

export function query(node: Node, query: string) {
    return tsquery(node.compilerNode, query)
        .map(n => (node as any)._getNodeFromCompilerNode(n) as Node);
}

dsherret

// Adapted from: https://github.com/Sciss/SpeechRecognitionHMM/blob/master/src/main/java/org/ioe/tprsa/audio/feature/MFCC.java

using System;
using System.Diagnostics;

namespace CommonShared.Audio
{
    public class MelFrequencyBinner
    {
        private const int _melFiltersCount = Constants.MEL_FILTERS_COUNT;

dsherret

// one way...

function getDeepMutableClone<T extends ts.Node>(node: T): T {
    return ts.transform(node, [
        context => node => deepCloneWithContext(node, context)
    ]).transformed[0];

    function deepCloneWithContext<T extends ts.Node>(
        node: T,
        context: ts.TransformationContext

dsherret

// I wrote this to test if it would be faster for my scenario and it wasn't... it was much much slower.
// So I'm throwing it away here on a gist. Perhaps someone would still find it useful.

/**
 * Mimicks the behaviour of cloning via a proxy for when the underlying object
 * will never change, but the clone might.
 * @param originalObject - Object to create a proxied clone of.
 */
export function proxiedClone<T extends object>(originalObject: T): T {
    const proxies = new Map<object, object>();

dsherret

// This script will look at all the exported class declarations from the main entrypoint of a library
// and ensure all private, protected, and @internal members are prefixed with an underscore.
import { Project, Node, SyntaxKind, TypeGuards, Scope, ClassMemberTypes, ParameterDeclaration } from "ts-simple-ast";

const project = new Project({ tsConfigFilePath: "tsconfig.json" });
const sourceFiles = project.getSourceFiles();

for (const file of sourceFiles)
    for (const classDec of file.getDescendantsOfKind(SyntaxKind.ClassDeclaration))
        for (const member of classDec.getMembers())

dsherret

// untested...
import { Project, SyntaxKind } from "ts-simple-ast";

const project = new Project({ tsConfigFilePath: "tsconfig.json" });
const srcDir = project.getDirectoryOrThrow("./src");

for (const sourceFile of project.getSourceFiles().filter(s => srcDir.isAncestorOf(s))) {
    for (const dec of [...sourceFile.getImportDeclarations(), ...sourceFile.getExportDeclarations()]) {
        const moduleSpecifierSourceFile = dec.getModuleSpecifierSourceFile();
        if (moduleSpecifierSourceFile == null || !srcDir.isAncestorOf(moduleSpecifierSourceFile))

dsherret

export class WeakCache<T extends object, U> {
    private readonly cacheItems: WeakDictionary<T, U>;

    constructor() {
        if (typeof WeakMap !== "undefined")
            this.cacheItems = new WeakMap<T, U>();
        else
            this.cacheItems = new Es5WeakMap();
    }