My VS Code tasks for Apple's Swift programs on Mac.

launch.json

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [
    {
      "type": "lldb",
      "name": "LLDB",
      "cwd" : "${workspaceFolder}",
      "request" : "launch",
      "program" : ".build/Debug/${fileBasenameNoExtension}",
      "terminal": "integrated",
      "preLaunchTask": "swift: Build Debug",
      // "postDebugTask": "swift: Clean Build Files",
      "args": [],
    },
  ]
}

tasks-file.json

{
  // See https://go.microsoft.com/fwlink/?LinkId=733558
  // for the documentation about the tasks.json format
  "version": "2.0.0",
  "options": {
    "cwd": "${workspaceFolder}",
    "env": {
      // for single file based swift project
      "PROJECTFILE" : "${relativeFile}",
      "PROJECTNAME" : "${fileBasenameNoExtension}",
      "OUTPUT"      : ".build",
      "DEBUG"       : "Debug",
      "MODULE"      : "Module",
      "RELEASE"     : "Release",
      "EXTENSION"   : ".cgi",  // set this to .cgi for web app
      "SYSTEM"      : "x86_64-apple-macosx10.10",
      "FORMATTER"   : "${workspaceFolder}/swift-format",
      "FORMATCONFIG": "${workspaceFolder}/swift-format.json",
      // import custom module files (module name with -l prefix)
      "IMPORT_1"    : "-lhello",
      "IMPORT_2"    : "",
      "IMPORT_3"    : "",
      "IMPORT_4"    : "",
      "IMPORT_5"    : "",
    },
  },
  "tasks": [
    {
      "label": "swift: Build Debug",
      "group": {
        "kind" : "build",
        "isDefault": true
      },
      "type" : "shell",
      "command": "swiftc",
      "args": [
        "${PROJECTFILE}",
        "-I","${OUTPUT}/${MODULE}",
        "-L","${OUTPUT}/${MODULE}",
        "-o","${OUTPUT}/${DEBUG}/${PROJECTNAME}",
        "-working-directory","${cwd}",
        "-target","${SYSTEM}",
        "-gdwarf-types",
        "-Onone",
        "-g",
        "-v",
        "${IMPORT_1}","${IMPORT_2}","${IMPORT_3}","${IMPORT_4}","${IMPORT_5}",
      ],
      "problemMatcher": []
    },
    {
      "label": "swift: Build Release",
      "group": "build",
      "type" : "shell",
      "command": "swiftc",
      "args": [
        "${PROJECTFILE}",
        "-I","${OUTPUT}/${MODULE}",
        "-L","${OUTPUT}/${MODULE}",
        "-o","${OUTPUT}/${RELEASE}/${PROJECTNAME}",
        "-working-directory","${cwd}",
        "-target","${SYSTEM}",
        // "-static-executable",
        "-O",
        "-gnone",
        "-v",
        "${IMPORT_1}","${IMPORT_2}","${IMPORT_3}","${IMPORT_4}","${IMPORT_5}",
      ],
      "problemMatcher": []
    },
    {
      "label": "swift: Build Module",
      "group": "build",
      "type" : "shell",
      "command": "swiftc",
      "args": [
        "${PROJECTFILE}",
        "-I","${OUTPUT}/${MODULE}",
        "-L","${OUTPUT}/${MODULE}",
        "-o","${OUTPUT}/${MODULE}/lib${PROJECTNAME}.dylib",  // for macOS
        "-working-directory","${cwd}",
        "-target","${SYSTEM}",
        "-emit-module",
        "-emit-library",
        // "-parse-as-library",
        // "-module-name","${PROJECTNAME}",
        "-Onone",
        "-g",
        "-v",
        // "${IMPORT_1}","${IMPORT_2}","${IMPORT_3}","${IMPORT_4}","${IMPORT_5}",
      ],
      "problemMatcher": []
    },
    {
      "label": "swift: Run Code (REPL)",
      "group": "test",
      "type" : "shell",
      "command": "swift",
      "args": [
        // REPL doesn't support custom modules
        "${PROJECTFILE}",
        "-I","${OUTPUT}/${MODULE}",
        "-L","${OUTPUT}/${MODULE}",
        "-working-directory","${cwd}",
        "-target","${SYSTEM}",
      ],
      "presentation": {
        "reveal": "always",
        "panel" : "shared",
        "clear" : true,
        "focus" : true,
      },
      "problemMatcher": []
    },
    {
      "label": "swift: Run Executable",
      "group": {
        "kind" : "test",
        "isDefault": true
      },
      "type" : "shell",
      "command": "${OUTPUT}/${DEBUG}/${PROJECTNAME}",
      "args": [],
      "presentation": {
        "reveal": "always",
        "panel" : "shared",
        "clear" : true,
        "focus" : true,
      },
      "problemMatcher": []
    },
    {
      "label": "swift: Create Build Folders",
      "type" : "shell",
      "command": "mkdir",
      "args": [
        "${OUTPUT}",
        "${OUTPUT}/${DEBUG}",
        "${OUTPUT}/${MODULE}",
        "${OUTPUT}/${RELEASE}",
      ],
      "presentation": {
        "reveal": "silent",
      },
      "problemMatcher": []
    },
    {
      "label": "swift: Clean Build Files",
      "type" : "shell",
      "command": "rm",
      "args": [
        "-rf",
        "${OUTPUT}/${DEBUG}/*",
        "${OUTPUT}/${RELEASE}/*",
        "${OUTPUT}/${PROJECTNAME}.*",
        "main.dSYM",
        "main",
      ],
      "presentation": {
        "reveal": "silent",
      },
      "problemMatcher": []
    },
    {
      "label": "swift: Clean Module Files",
      "type" : "shell",
      "command": "rm",
      "args": [
        "-rf",
        "${OUTPUT}/${MODULE}/${PROJECTNAME}.o",
        "${OUTPUT}/${MODULE}/${PROJECTNAME}.swiftdoc",
        "${OUTPUT}/${MODULE}/${PROJECTNAME}.swiftmodule",
        "${OUTPUT}/${MODULE}/lib${PROJECTNAME}.dylib",
        "${OUTPUT}/${MODULE}/lib${PROJECTNAME}.dylib.dSYM",
      ],
      "presentation": {
        "reveal": "silent",
      },
      "problemMatcher": []
    },
    { // format code using google's swift-format
      "label": "swift: Beautify File",
      "type" : "shell",
      "command": "${FORMATTER}",
      "args": [
        "-i",
        "-m","format",
        "--configuration","${FORMATCONFIG}",
        "${fileDirname}/${fileBasenameNoExtension}.swift",
      ],
      "presentation": {
        "reveal": "silent",
      },
      "problemMatcher": []
    },
  ]
}

tasks-folder.json

{
  // See https://go.microsoft.com/fwlink/?LinkId=733558
  // for the documentation about the tasks.json format
  "version": "2.0.0",
  "options": {
    "cwd": "${workspaceFolder}",
    "env": {
      // for folder based swift project (SPM or xcode)
      "PROJECTFILE" : "${workspaceFolderBasename}/*.swift",
      "PROJECTNAME" : "${workspaceFolderBasename}",
      "OUTPUT"      : "Build/Products",
      "DEBUG"       : "Debug",
      "MODULE"      : "Module",
      "RELEASE"     : "Release",
      "EXTENSION"   : ".cgi",  // set this to .cgi for web app
      "SYSTEM"      : "x86_64-apple-macosx10.10",
      "FORMATTER"   : "${workspaceFolder}/swift-format",
      "FORMATCONFIG": "${workspaceFolder}/swift-format.json",
      // import custom module files (module name with -l prefix)
      "IMPORT_1"    : "-lhelper",
      "IMPORT_2"    : "",
      "IMPORT_3"    : "",
      "IMPORT_4"    : "",
      "IMPORT_5"    : "",
    },
  },
  "tasks": [
    {
      "label": "swift: Build Debug",
      "group": {
        "kind" : "build",
        "isDefault": true
      },
      "type" : "shell",
      "command": "swiftc",
      "args": [
        "${PROJECTFILE}",
        "-I","${OUTPUT}/${MODULE}",
        "-L","${OUTPUT}/${MODULE}",
        "-o","${OUTPUT}/${DEBUG}/${PROJECTNAME}",
        "-working-directory","${cwd}",
        "-target","${SYSTEM}",
        "-gdwarf-types",
        "-Onone",
        "-g",
        "-v",
        "${IMPORT_1}","${IMPORT_2}","${IMPORT_3}","${IMPORT_4}","${IMPORT_5}",
      ],
      "problemMatcher": []
    },
    {
      "label": "swift: Build Release",
      "group": "build",
      "type" : "shell",
      "command": "swiftc",
      "args": [
        "${PROJECTFILE}",
        "-I","${OUTPUT}/${MODULE}",
        "-L","${OUTPUT}/${MODULE}",
        "-o","${OUTPUT}/${RELEASE}/${PROJECTNAME}",
        "-working-directory","${cwd}",
        "-target","${SYSTEM}",
        // "-static-executable",
        "-O",
        "-gnone",
        "-v",
        "${IMPORT_1}","${IMPORT_2}","${IMPORT_3}","${IMPORT_4}","${IMPORT_5}",
      ],
      "problemMatcher": []
    },
    {
      "label": "swift: Build Module",
      "group": "build",
      "type" : "shell",
      "command": "swiftc",
      "args": [
        "${relativeFile}",
        "-I","${OUTPUT}/${MODULE}",
        "-L","${OUTPUT}/${MODULE}",
        "-o","${OUTPUT}/${MODULE}/lib${fileBasenameNoExtension}.dylib",  // for macOS
        "-working-directory","${cwd}",
        "-target","${SYSTEM}",
        "-emit-module",
        "-emit-library",
        // "-parse-as-library",
        // "-module-name","${fileBasenameNoExtension}",
        "-Onone",
        "-g",
        "-v",
        // "${IMPORT_1}","${IMPORT_2}","${IMPORT_3}","${IMPORT_4}","${IMPORT_5}",
      ],
      "problemMatcher": []
    },
    {
      "label": "swift: Run Executable",
      "group": {
        "kind" : "test",
        "isDefault": true
      },
      "type" : "shell",
      "command": "${OUTPUT}/${DEBUG}/${PROJECTNAME}",
      "args": [],
      "presentation": {
        "reveal": "always",
        "panel" : "shared",
        "clear" : true,
        "focus" : true,
      },
      "problemMatcher": []
    },
    {
      "label": "swift: Create Build Folders",
      "type" : "shell",
      "command": "mkdir",
      "args": [
        "Build",
        "${OUTPUT}",
        "${OUTPUT}/${DEBUG}",
        "${OUTPUT}/${MODULE}",
        "${OUTPUT}/${RELEASE}",
      ],
      "presentation": {
        "reveal": "silent",
      },
      "problemMatcher": []
    },
    {
      "label": "swift: Clean Build Files",
      "type" : "shell",
      "command": "rm",
      "args": [
        "-rf",
        "${OUTPUT}/${DEBUG}/*",
        "${OUTPUT}/${RELEASE}/*",
        "${OUTPUT}/${PROJECTNAME}.*",
        "main.dSYM",
        "main",
      ],
      "presentation": {
        "reveal": "silent",
      },
      "problemMatcher": []
    },
    {
      "label": "swift: Clean Module Files",
      "type" : "shell",
      "command": "rm",
      "args": [
        "-rf",
        "${OUTPUT}/${MODULE}/${fileBasenameNoExtension}.o",
        "${OUTPUT}/${MODULE}/${fileBasenameNoExtension}.swiftdoc",
        "${OUTPUT}/${MODULE}/${fileBasenameNoExtension}.swiftmodule",
        "${OUTPUT}/${MODULE}/lib${fileBasenameNoExtension}.dylib",
        "${OUTPUT}/${MODULE}/lib${fileBasenameNoExtension}.dylib.dSYM",
      ],
      "presentation": {
        "reveal": "silent",
      },
      "problemMatcher": []
    },
    { // format code using google's swift-format
      "label": "swift: Beautify File",
      "type" : "shell",
      "command": "${FORMATTER}",
      "args": [
        "-i",
        "-m","format",
        "--configuration","${FORMATCONFIG}",
        "${fileDirname}/${fileBasenameNoExtension}.swift",
      ],
      "presentation": {
        "reveal": "silent",
      },
      "problemMatcher": []
    },
 ]
}

vscode_swift_lsp.png