initial commit

.gitignore

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+# macOS
+.DS_Store
+
+# sbt specific
+dist/*
+target/
+lib_managed/
+src_managed/
+project/boot/
+project/plugins/project/
+project/local-plugins.sbt
+.history
+.ensime
+.ensime_cache/
+.sbt-scripted/
+local.sbt
+
+# Bloop
+.bsp
+
+# VS Code
+.vscode/
+
+# Metals
+.bloop/
+.metals/
+metals.sbt
+
+# IDEA
+.idea
+.idea_modules
+/.worksheet/

.scalafmt.conf

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+align.multiline = true
+align.preset = more
+align.stripMargin = true
+assumeStandardLibraryStripMargin = true
+continuationIndent.defnSite = 2
+danglingParentheses.preset = true
+docstrings = JavaDoc
+docstrings.style = Asterisk
+docstrings.wrap = yes
+docstrings.wrapMaxColumn = 80
+includeCurlyBraceInSelectChains = false
+lineEndings = preserve
+maxColumn = 120
+newlines.afterInfix = keep
+optIn.annotationNewlines = true
+rewrite.imports.sort = original
+rewrite.rules = [Imports, RedundantBraces, SortModifiers]
+rewrite.rules = [RedundantParens]
+runner.dialect = scala213
+spaces.inImportCurlyBraces = false
+trailingCommas = "always"
+version = "3.5.3"

README.md

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+## sbt project compiled with Scala 3
+
+### Usage
+
+This is a normal sbt project. You can compile code with `sbt compile`, run it with `sbt run`, and `sbt console` will start a Scala 3 REPL.
+
+For more information on the sbt-dotty plugin, see the
+[scala3-example-project](https://github.com/scala/scala3-example-project/blob/main/README.md).

build.sbt

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+import Dependencies._
+
+val scala3Version = "2.13.8"
+
+lazy val root = project
+  .in(file("."))
+  .settings(
+    name                := "GraphQLCompose",
+    version             := "0.1.0-SNAPSHOT",
+    scalaVersion        := scala3Version,
+    libraryDependencies := Seq(
+      ZIOCore,
+      ZIOSchema,
+      ZIOSchemaDerivation,
+      ZIOTest % Test,
+    ),
+  )

project/Dependencies.scala

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+object Dependencies {
+  import sbt._
+  val zioVersion       = "2.0.0"
+  val zioSchemaVersion = "0.2.0"
+
+  val ZIOCore             = "dev.zio" %% "zio"                   % zioVersion
+  val ZIOTest             = "dev.zio" %% "zio-test"              % zioVersion
+  val ZIOSchema           = "dev.zio" %% "zio-schema"            % zioSchemaVersion
+  val ZIOSchemaDerivation = "dev.zio" %% "zio-schema-derivation" % zioSchemaVersion
+}

project/build.properties

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+sbt.version=1.7.1

src/main/scala/com/tusharmath/compose/Endpoint.scala

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+package com.tusharmath.compose
+
+final case class Endpoint(host: String, port: Int, path: String, body: Array[Byte], protocol: Protocol)
+
+sealed trait Protocol
+object Protocol {
+  case class Http(method: String) extends Protocol
+}

src/main/scala/com/tusharmath/compose/GraphQL.scala

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+package com.tusharmath.compose
+
+import zio.schema.Schema
+
+sealed trait GraphQL[-A, +B] {}
+
+object GraphQL {
+  case class Constant[B](b: B, schema: Schema[B])                 extends GraphQL[Any, B]
+  case class Identity[A](schema: Schema[A])                       extends GraphQL[A, A]
+  case class Compose[A, B, C](g: GraphQL[B, C], f: GraphQL[A, B]) extends GraphQL[A, C]
+  case class Zip2[A, B, C](g: GraphQL[A, B], f: GraphQL[A, C])    extends GraphQL[A, (B, C)]
+  case class Load[A](endpoint: Endpoint, schema: Schema[A])       extends GraphQL[Any, A]
+
+  def constant[A](a: A)(implicit schema: Schema[A]): GraphQL[Any, A] = Constant(a, schema)
+}

src/main/scala/com/tusharmath/compose/Main.scala

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+package com.tusharmath.compose
+
+object Main extends App {
+  def hello(): Unit = {
+    println("Hello!")
+  }
+}

src/test/scala/com/tusharmath/compose/GraphQLSpec.scala

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+package com.tusharmath.compose
+
+import com.tusharmath.compose.GraphQLSpec.test
+import zio.test.{assertTrue, ZIOSpecDefault}
+
+object GraphQLSpec extends ZIOSpecDefault:
+  override def spec = test("Some test") {
+    assertTrue(true)
+  }