Add another experiment infer2 (WIP)

src/experiment/arithmeticInfer2.ts

@@ -0,0 +1,15 @@
+import { infer } from '../generic/infer'
+import { Dependencies, Signature } from '../interfaces/type'
+
+export type multiplyDep<T> = Dependencies<'multiply', T>
+
+export const square1 =
+   <T>(dep: Dependencies<'multiply', T>): Signature<'square', T> =>
+   z => dep.multiply(z, z)
+
+export const square2 = infer(<T>(dep: {
+  multiply: (a: number, b: number) => number,
+  unaryMinus: (x: number) => number, // just for the experiment
+}): (a: number) => number =>
+  z => dep.multiply(z, z)
+)

src/plugins/infer1.ts

@@ -2,32 +2,6 @@ import { readFileSync } from "fs";
 import * as ts from "typescript";
 import { inspect } from 'util'
 
-/**
- * # The idea
- * 
- * Create a TypeScript plugin which can replace structures like:
- * 
- *    infer(factoryFunction)
- * 
- * where `factoryFunction` is a mathjs factory function in TypeScript, with something like: 
- * 
- *    infer({ signature: factoryFunction })
- * 
- * where `signature` is a string containing the type of the factory function and its dependencies.
- * 
- * # How to run
- * 
- *     pnpm experiment-infer
- *     pnpm experiment-infer-direct
- * 
- * # Read more
- * 
- * - https://github.com/microsoft/TypeScript/wiki/Writing-a-Language-Service-Plugin
- * - https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API
- * - https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API#using-the-type-checker
- * - https://github.com/Microsoft/TypeScript/wiki/Using-the-Language-Service-API
- */
-
 export function infer(sourceFile: ts.SourceFile) {
     recurse(sourceFile);
 

src/plugins/infer2.ts

@@ -0,0 +1,74 @@
+import * as ts from "typescript"
+
+// based on: https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API#using-the-type-checker
+
+infer2(process.argv.slice(2), {
+  target: ts.ScriptTarget.ES5,
+  module: ts.ModuleKind.CommonJS
+})
+
+function infer2(
+  fileNames: string[],
+  options: ts.CompilerOptions
+): void {
+  const program = ts.createProgram(fileNames, options)
+  const typeChecker = program.getTypeChecker()
+
+  for (const sourceFile of program.getSourceFiles()) {
+    if (!sourceFile.isDeclarationFile) {
+      ts.forEachChild(sourceFile, visit)
+    }
+  }
+
+  return
+
+  function visit(node: ts.Node) {
+    // // Only consider exported nodes
+    // if (!isNodeExported(node)) {
+    //   return;
+    // }
+
+    // console.log('Node', node.kind, node?.['name']?.escapedText)
+
+    if (ts.isModuleDeclaration(node)) {
+      // This is a namespace, visit its children
+      console.log('check')
+      ts.forEachChild(node, visit);
+    } else if (ts.isTypeAliasDeclaration(node)) {
+      console.log('isTypeAliasDeclaration', node.name.escapedText)
+
+      let symbol = typeChecker.getSymbolAtLocation(node.name);
+      if (symbol) {
+        const symbolType = typeChecker.getTypeOfSymbolAtLocation(symbol, symbol.valueDeclaration)
+        const symbolSignature = typeChecker.getSignaturesOfType(symbolType, ts.SignatureKind.Call)
+
+        // checker.getResolvedSignature(symbol)
+        console.log('symbol', symbol.getName(), symbolSignature) 
+
+        // getTypeOfSymbolAtLocation
+        // getResolvedSignature
+      }
+    } else if (ts.isCallExpression(node)) {
+      console.log('isCallExpression', node.expression)
+    } else if (ts.isFunctionDeclaration(node)) {
+      console.log('isFunctionDeclaration', node.name.escapedText, { typeParameter0: node.typeParameters[0] })
+
+      if (node.name.escapedText === 'infer') {
+        const param0 = node.typeParameters[0]
+        if (ts.isPropertyDeclaration(param0)) {
+          const symbol = typeChecker.getSymbolAtLocation(param0)
+
+          // TODO: get resolving 
+
+          // console.log('getResolvedSignature', typeChecker.getResolvedSignature(node) )
+
+          // const symbolType = typeChecker.getTypeOfSymbolAtLocation(symbol, symbol.valueDeclaration)
+          // const symbolSignature = typeChecker.getSignaturesOfType(symbolType, ts.SignatureKind.Call)
+          // console.log('symbol', symbol.getName(), symbolSignature) 
+  
+          // console.log('getSignaturesOfType', typeChecker.getSignaturesOfType(param0)
+        }        
+      }
+    }
+  }
+}