diff --git a/Dockerfile.dev b/Dockerfile.dev
index fc15487..efe6904 100644
--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -2,6 +2,9 @@ FROM ubuntu:focal
 
 ARG UID
 
+COPY scripts/docker-install-phase0.bash /tmp/
+RUN /tmp/docker-install-phase0.bash
+
 COPY scripts/docker-install-phase1.bash /tmp/
 RUN /tmp/docker-install-phase1.bash
 
@@ -31,6 +34,7 @@ RUN /tmp/docker-install-phase6.bash "$UID"
 
 USER docker
 WORKDIR /home/docker
+RUN chmod go-rwx /home/docker
 EXPOSE 6119
 EXPOSE 6120
 
diff --git a/Dockerfile.prod b/Dockerfile.prod
index 063ce53..a69919d 100644
--- a/Dockerfile.prod
+++ b/Dockerfile.prod
@@ -4,6 +4,9 @@ FROM ubuntu:focal
 # prod, it's not actually read by anything.
 ARG UID
 
+COPY scripts/docker-install-phase0.bash /tmp/
+RUN /tmp/docker-install-phase0.bash
+
 COPY scripts/docker-install-phase1.bash /tmp/
 RUN /tmp/docker-install-phase1.bash
 
@@ -33,6 +36,7 @@ RUN /tmp/docker-install-phase6.bash
 
 USER docker
 WORKDIR /home/docker
+RUN chmod go-rwx /home/docker
 EXPOSE 6119
 EXPOSE 6120
 
@@ -40,7 +44,7 @@ ENTRYPOINT ["/usr/local/bin/pid1.bash"]
 COPY scripts/pid1.bash /usr/local/bin/
 CMD ["yarn", "run", "server"]
 
-RUN mkdir /tmp/riju
+RUN mkdir /tmp/riju /tmp/riju/scripts
 COPY --chown=docker:docker package.json yarn.lock /tmp/riju/
 RUN cd /tmp/riju && yarn install
 COPY --chown=docker:docker webpack.config.js tsconfig.json tsconfig-webpack.json /tmp/riju/
@@ -48,10 +52,11 @@ COPY --chown=docker:docker frontend /tmp/riju/frontend
 RUN cd /tmp/riju && yarn run frontend
 COPY --chown=docker:docker backend /tmp/riju/backend
 RUN cd /tmp/riju && yarn run backend
+COPY --chown=docker:docker scripts/compile-system.bash /tmp/riju/scripts
 COPY --chown=docker:docker system /tmp/riju/system
 RUN cd /tmp/riju && RIJU_PRIVILEGED=1 yarn run system
 COPY --chown=docker:docker . /home/docker/src
-RUN cp -R /tmp/riju/* /home/docker/src/ && rm -rf /tmp/riju
+RUN sudo cp -a /tmp/riju/* /home/docker/src/ && rm -rf /tmp/riju
 
 WORKDIR /home/docker/src
 RUN sudo deluser docker sudo
diff --git a/Makefile b/Makefile
index 2a7ef42..5ee1504 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ image-prod: ## Build Docker image for production
 
 .PHONY: docker
 docker: image-dev ## Run shell with source code and deps inside Docker
-	scripts/docker.bash run -it --rm -v "$(PWD):/home/docker/src" -p 6119:6119 -p 6120:6120 riju bash
+	scripts/docker.bash run -it --rm -v "$(PWD):/home/docker/src" -p 6119:6119 -p 6120:6120 -h riju riju bash
 
 .PHONY: deploy
 deploy: ## Deploy current master from GitHub to production
diff --git a/README.md b/README.md
index e5c140b..7aee9be 100644
--- a/README.md
+++ b/README.md
@@ -18,18 +18,18 @@ documenting it until it has reached feature-completeness.
 To run the webserver, all you need is Yarn. Just run `yarn install` as
 usual to install dependencies. For production, it's:
 
-    $ yarn backend
-    $ yarn frontend
-    $ yarn system
+    $ yarn backend    |- or run all three with 'yarn build'
+    $ yarn frontend   |
+    $ yarn system     |
     $ yarn server
 
 For development with file watching and automatic server rebooting and
 all that, it's:
 
-    $ yarn backend-dev
-    $ yarn frontend-dev
-    $ yarn system-dev
-    $ yarn server-dev
+    $ yarn backend-dev    |- or run all four with 'yarn dev'
+    $ yarn frontend-dev   |
+    $ yarn system-dev     |
+    $ yarn server-dev     |
 
 The webserver listens on `localhost:6119`. Now, although the server
 itself will work, the only languages that will work are the ones that
diff --git a/backend/src/api.ts b/backend/src/api.ts
index c3b5e59..9897468 100644
--- a/backend/src/api.ts
+++ b/backend/src/api.ts
@@ -1,49 +1,48 @@
-import * as fs from "fs";
 import * as path from "path";
 import * as WebSocket from "ws";
 
-import * as mkdirp from "mkdirp";
-import * as nodeCleanup from "node-cleanup";
 import * as pty from "node-pty";
 import { IPty } from "node-pty";
-import * as tmp from "tmp";
 import { v4 as getUUID } from "uuid";
 
+import { PRIVILEGED } from "./config";
 import { LangConfig, langs } from "./langs";
 import { borrowUser } from "./users";
+import { callPrivileged, getEnv, spawnPrivileged } from "./util";
 
 export class Session {
-  id: string;
+  uuid: string;
   code: string;
   config: LangConfig;
   term: { pty: IPty | null; live: boolean };
   ws: WebSocket;
-  tmpdir: string | null;
-  tmpdirCleanup: (() => void) | null;
+  homedir: string | null;
   uid: number | null;
   uidCleanup: (() => Promise<void>) | null;
 
-  log = (msg: string) => console.log(`[${this.id}] ${msg}`);
+  log = (msg: string) => console.log(`[${this.uuid}] ${msg}`);
 
   constructor(ws: WebSocket, lang: string) {
-    this.id = getUUID();
+    this.uuid = getUUID();
     this.log(`Creating session, language ${lang}`);
     this.ws = ws;
     this.config = langs[lang];
     this.term = { pty: null, live: false };
     this.code = "";
-    this.tmpdir = null;
-    this.tmpdirCleanup = null;
+    this.homedir = null;
     this.uid = null;
     this.uidCleanup = null;
     ws.on("message", this.handleClientMessage);
     ws.on("close", () =>
-      this.cleanup().catch((err) =>
-        this.log(`Error during session cleanup: ${err}`)
-      )
+      this.cleanup().catch((err) => {
+        this.log(`Error during session cleanup`);
+        console.log(err);
+      })
     );
-    nodeCleanup();
-    this.run().catch((err) => this.log(`Error while running: ${err}`));
+    this.run().catch((err) => {
+      this.log(`Error while setting up environment for pty`);
+      console.log(err);
+    });
   }
   handleClientMessage = (event: string) => {
     let msg: any;
@@ -81,9 +80,18 @@ export class Session {
       ({ uid: this.uid, cleanup: this.uidCleanup } = await borrowUser(
         this.log
       ));
+      this.log(`Borrowed uid ${this.uid}`);
     }
-    this.log(`Borrowed uid ${this.uid}`);
-    const { name, repl, main, suffix, compile, run, hacks } = this.config;
+    const {
+      name,
+      repl,
+      main,
+      suffix,
+      alwaysCreate,
+      compile,
+      run,
+      hacks,
+    } = this.config;
     if (this.term.pty) {
       this.term.pty.kill();
       this.term.live = false;
@@ -93,20 +101,9 @@ export class Session {
     } catch (err) {
       //
     }
-    if (this.tmpdir == null) {
-      ({ path: this.tmpdir, cleanup: this.tmpdirCleanup } = await new Promise(
-        (resolve, reject) =>
-          tmp.dir(
-            { unsafeCleanup: true, dir: "riju" },
-            (err, path, cleanup) => {
-              if (err) {
-                reject(err);
-              } else {
-                resolve({ path, cleanup });
-              }
-            }
-          )
-      ));
+    if (this.homedir == null) {
+      this.homedir = `/tmp/riju/${this.uuid}`;
+      await callPrivileged(["setup", `${this.uid}`, this.uuid], this.log);
     }
     let cmdline: string;
     if (!run) {
@@ -117,22 +114,33 @@ export class Session {
         code += suffix;
       }
       if (main.includes("/")) {
-        await mkdirp(path.dirname(path.resolve(this.tmpdir!, main)));
+        await spawnPrivileged(
+          this.uid,
+          this.uuid,
+          ["mkdir", "-p", path.dirname(path.resolve(this.homedir, main))],
+          this.log
+        );
       }
-      await new Promise((resolve, reject) =>
-        fs.writeFile(path.resolve(this.tmpdir!, main), code, (err) => {
-          if (err) {
-            reject(err);
-          } else {
-            resolve();
-          }
-        })
+      await spawnPrivileged(
+        this.uid,
+        this.uuid,
+        ["sh", "-c", `cat > ${path.resolve(this.homedir, main)}`],
+        this.log,
+        { input: code }
       );
       cmdline = run;
       if (compile) {
         cmdline = `( ${compile} ) && ( ${run} )`;
       }
     } else if (repl) {
+      if (alwaysCreate) {
+        await spawnPrivileged(
+          this.uid,
+          this.uuid,
+          ["touch", `${path.resolve(this.homedir, main)}`],
+          this.log
+        );
+      }
       cmdline = repl;
     } else {
       cmdline = `echo '${name} has no REPL, press Run to see it in action'`;
@@ -140,32 +148,38 @@ export class Session {
     if (hacks && hacks.includes("ghci-config") && run) {
       if (this.code) {
         const contents = ":load Main\nmain\n";
-        await new Promise((resolve, reject) => {
-          fs.writeFile(path.resolve(this.tmpdir!, ".ghci"), contents, (err) => {
-            if (err) {
-              reject(err);
-            } else {
-              resolve();
-            }
-          });
-        });
+        await spawnPrivileged(
+          this.uid,
+          this.uuid,
+          ["sh", "-c", `cat > ${path.resolve(this.homedir, ".ghci")}`],
+          this.log,
+          { input: contents }
+        );
       } else {
-        await new Promise((resolve, reject) =>
-          fs.unlink(path.resolve(this.tmpdir!, ".ghci"), (err) => {
-            if (err && err.code !== "ENOENT") {
-              reject(err);
-            } else {
-              resolve();
-            }
-          })
+        await spawnPrivileged(
+          this.uid,
+          this.uuid,
+          ["rm", "-f", path.resolve(this.homedir, ".ghci")],
+          this.log
         );
       }
     }
+    const args = PRIVILEGED
+      ? [
+          "/home/docker/src/system/out/riju-system-privileged",
+          "spawn",
+          `${this.uid}`,
+          `${this.uuid}`,
+          "bash",
+          "-c",
+          cmdline,
+        ]
+      : ["bash", "-c", cmdline];
+    const env = getEnv(this.uuid);
     const term = {
-      pty: pty.spawn("bash", ["-c", cmdline], {
+      pty: pty.spawn(args[0], args.slice(1), {
         name: "xterm-color",
-        cwd: this.tmpdir!,
-        env: process.env as { [key: string]: string },
+        env,
       }),
       live: true,
     };
@@ -186,8 +200,8 @@ export class Session {
   };
   cleanup = async () => {
     this.log(`Cleaning up session`);
-    if (this.tmpdirCleanup) {
-      this.tmpdirCleanup();
+    if (this.homedir) {
+      await callPrivileged(["teardown", this.uuid], this.log);
     }
     if (this.uidCleanup) {
       await this.uidCleanup();
diff --git a/backend/src/config.ts b/backend/src/config.ts
new file mode 100644
index 0000000..133630c
--- /dev/null
+++ b/backend/src/config.ts
@@ -0,0 +1,3 @@
+import * as process from "process";
+
+export const PRIVILEGED = process.env.RIJU_PRIVILEGED ? true : false;
diff --git a/backend/src/langs.ts b/backend/src/langs.ts
index 021d4f8..3859c38 100644
--- a/backend/src/langs.ts
+++ b/backend/src/langs.ts
@@ -6,6 +6,7 @@ export interface LangConfig {
   main: string;
   prefix?: string;
   suffix?: string;
+  alwaysCreate?: boolean;
   compile?: string;
   run: string;
   template: string;
@@ -220,7 +221,7 @@ int main() {
     monacoLang: "csharp",
     main: "main.cs",
     compile: "mcs main.cs",
-    run: "./main.exe",
+    run: "mono main.exe",
     template: `class main {
     static void Main(string[] args) {
         System.Console.WriteLine("Hello, world!");
@@ -326,9 +327,9 @@ output = "Hello, world!"
     aliases: ["elv"],
     name: "Elvish",
     monacoLang: "plaintext",
-    repl: "SHELL=/usr/bin/elvish HOME=. elvish",
+    repl: `SHELL=/usr/bin/elvish HOME="$PWD" elvish`,
     main: ".elvish/rc.elv",
-    run: "SHELL=/usr/bin/elvish HOME=. elvish",
+    run: `SHELL=/usr/bin/elvish HOME="$PWD" elvish`,
     template: `echo "Hello, world!"
 `,
   },
@@ -451,8 +452,8 @@ main = putStrLn "Hello, world!"
     repl: "ink",
     main: "main.ink",
     run: "ink main.ink; ink",
-    template: `std := load('../../opt/ink/std')
-str := load('../../opt/ink/str')
+    template: `std := load('../../../opt/ink/std')
+str := load('../../../opt/ink/str')
 
 log := std.log
 
@@ -535,9 +536,9 @@ PLEASE GIVE UP
     aliases: ["kshell"],
     name: "Ksh",
     monacoLang: "shell",
-    repl: "SHELL=/usr/bin/ksh HOME=. ksh",
+    repl: `SHELL=/usr/bin/ksh HOME="$PWD" ksh`,
     main: ".kshrc",
-    run: "SHELL=/usr/bin/ksh HOME=. ksh",
+    run: `SHELL=/usr/bin/ksh HOME="$PWD" ksh`,
     template: `echo "Hello, world!"
 `,
   },
@@ -830,9 +831,9 @@ binding_irb.run(IRB.conf)
     aliases: ["shell", "posix", "posixsh", "ash", "dash", "posh"],
     name: "Sh",
     monacoLang: "shell",
-    repl: "SHELL=/usr/bin/sh HOME=. posh -l",
+    repl: `SHELL=/usr/bin/sh HOME="$PWD" posh -l`,
     main: ".profile",
-    run: "SHELL=/usr/bin/sh HOME=. posh -l",
+    run: `SHELL=/usr/bin/sh HOME="$PWD" posh -l`,
     template: `echo "Hello, world!"
 `,
   },
@@ -992,7 +993,7 @@ END
     monacoLang: "tcl",
     repl: "tclsh",
     main: ".tclshrc",
-    run: "HOME=. tclsh",
+    run: `HOME="$PWD" tclsh`,
     template: `puts {Hello, world!}
 `,
   },
@@ -1000,9 +1001,9 @@ END
     aliases: ["tcshell", "tcshrc"],
     name: "Tcsh",
     monacoLang: "shell",
-    repl: "SHELL=/usr/bin/tcsh HOME=. tcsh",
+    repl: `SHELL=/usr/bin/tcsh HOME="$PWD" tcsh`,
     main: ".tcshrc",
-    run: "SHELL=/usr/bin/tcsh HOME=. tcsh",
+    run: `SHELL=/usr/bin/tcsh HOME="$PWD" tcsh`,
     template: `echo "Hello, world!"
 `,
   },
@@ -1104,7 +1105,8 @@ message:
     monacoLang: "shell",
     repl: "SHELL=/usr/bin/zsh zsh",
     main: ".zshrc",
-    run: "SHELL=/usr/bin/zsh ZDOTDIR=. zsh",
+    alwaysCreate: true,
+    run: `SHELL=/usr/bin/zsh ZDOTDIR="$PWD" zsh`,
     template: `echo "Hello, world!"
 `,
   },
diff --git a/backend/src/users.ts b/backend/src/users.ts
index 6e3c8f4..0742a6b 100644
--- a/backend/src/users.ts
+++ b/backend/src/users.ts
@@ -1,16 +1,17 @@
 import { spawn } from "child_process";
 import * as fs from "fs";
-import * as process from "process";
 
 import * as AsyncLock from "async-lock";
 import * as _ from "lodash";
 import * as parsePasswd from "parse-passwd";
 
+import { PRIVILEGED } from "./config";
+import { callPrivileged } from "./util";
+
 // Keep in sync with system/src/riju-system-privileged.c
 const MIN_UID = 2000;
 const MAX_UID = 65000;
 
-const PRIVILEGED = process.env.RIJU_PRIVILEGED ? true : false;
 const CUR_UID = parseInt(process.env.UID || "") || null;
 
 let availIds: number[] | null = null;
@@ -29,7 +30,7 @@ async function readExistingUsers(log: (msg: string) => void) {
       })
     )
   )
-    .filter(({ username }) => username.startsWith("riju_user"))
+    .filter(({ username }) => username.startsWith("riju"))
     .map(({ uid }) => parseInt(uid))
     .filter((uid) => !isNaN(uid) && uid >= MIN_UID && uid < MAX_UID);
   nextId = (_.max(availIds) || MIN_UID - 1) + 1;
@@ -40,33 +41,11 @@ async function createUser(log: (msg: string) => void): Promise<number> {
   if (nextId! >= MAX_UID) {
     throw new Error("too many users");
   }
-  return await new Promise((resolve, reject) => {
-    const uid = nextId!;
-    const useradd = spawn("system/out/riju-system-privileged", [
-      "useradd",
-      `${uid}`,
-    ]);
-    let output = "";
-    useradd.stdout.on("data", (data) => {
-      output += `${data}`;
-    });
-    useradd.stderr.on("data", (data) => {
-      output += `${data}`;
-    });
-    useradd.on("close", (code) => {
-      output = output.trim();
-      if (output) {
-        log("Output from useradd:\n" + output);
-      }
-      if (code === 0) {
-        log(`Created new user with ID ${uid}`);
-        nextId! += 1;
-        resolve(uid);
-      } else {
-        reject(`useradd failed with error code ${code}`);
-      }
-    });
-  });
+  const uid = nextId!;
+  await callPrivileged(["useradd", `${uid}`], log);
+  log(`Created new user with ID ${uid}`);
+  nextId! += 1;
+  return uid;
 }
 
 export async function borrowUser(log: (msg: string) => void) {
diff --git a/backend/src/util.ts b/backend/src/util.ts
new file mode 100644
index 0000000..235252c
--- /dev/null
+++ b/backend/src/util.ts
@@ -0,0 +1,83 @@
+import { spawn, SpawnOptions } from "child_process";
+import * as process from "process";
+
+interface Options extends SpawnOptions {
+  input?: string;
+}
+
+export function getEnv(uuid: string) {
+  const cwd = `/tmp/riju/${uuid}`;
+  return {
+    HOME: cwd,
+    HOSTNAME: "riju",
+    LANG: "C.UTF-8",
+    LC_ALL: "C.UTF-8",
+    PATH: "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/bin",
+    PWD: cwd,
+    SHELL: "/usr/bin/bash",
+    TERM: "xterm-color",
+  };
+}
+
+export async function call(
+  args: string[],
+  log: (msg: string) => void,
+  options?: Options
+) {
+  options = options || {};
+  const input = options.input;
+  delete options.input;
+  const proc = spawn(args[0], args.slice(1), options);
+  if (input) {
+    proc.stdin!.end(input);
+  }
+  let output = "";
+  proc.stdout!.on("data", (data: Buffer) => {
+    output += `${data}`;
+  });
+  proc.stderr!.on("data", (data: Buffer) => {
+    output += `${data}`;
+  });
+  await new Promise((resolve, reject) => {
+    proc.on("error", reject);
+    proc.on("close", (code: number) => {
+      output = output.trim();
+      if (output) {
+        log(`Output from ${args[0]}:\n` + output);
+      }
+      if (code === 0) {
+        resolve();
+      } else {
+        reject(`command ${args[0]} failed with error code ${code}`);
+      }
+    });
+  });
+}
+
+export async function callPrivileged(
+  args: string[],
+  log: (msg: string) => void,
+  options?: Options
+) {
+  await call(
+    ["/home/docker/src/system/out/riju-system-privileged"].concat(args),
+    log,
+    options
+  );
+}
+
+export async function spawnPrivileged(
+  uid: number,
+  uuid: string,
+  args: string[],
+  log: (msg: string) => void,
+  options?: Options
+) {
+  options = options || {};
+  options.env = getEnv(uuid);
+  await callPrivileged(
+    ["spawn", `${uid}`, `${uuid}`].concat(args),
+    log,
+    options
+  );
+}
diff --git a/frontend/src/app.ts b/frontend/src/app.ts
index 95deb8d..28bdd2f 100644
--- a/frontend/src/app.ts
+++ b/frontend/src/app.ts
@@ -10,92 +10,98 @@ interface RijuConfig {
   template: string;
 }
 
-const config: RijuConfig = (window as any).rijuConfig;
+async function main() {
+  const config: RijuConfig = (window as any).rijuConfig;
 
-const term = new Terminal();
-const fitAddon = new FitAddon();
-term.loadAddon(fitAddon);
-term.open(document.getElementById("terminal")!);
+  const term = new Terminal();
+  const fitAddon = new FitAddon();
+  term.loadAddon(fitAddon);
+  term.open(document.getElementById("terminal")!);
 
-fitAddon.fit();
-window.addEventListener("resize", () => fitAddon.fit());
+  fitAddon.fit();
+  window.addEventListener("resize", () => fitAddon.fit());
 
-term.write("Connecting to server...");
-
-const initialRetryDelayMs = 200;
-let retryDelayMs = initialRetryDelayMs;
-
-function tryConnect() {
-  console.log("Connecting to server...");
-  socket = new WebSocket(
-    (document.location.protocol === "http:" ? "ws://" : "wss://") +
-      document.location.host +
-      `/api/v1/ws?lang=${encodeURIComponent(config.id)}`
+  await new Promise((resolve) =>
+    term.write("Connecting to server...", resolve)
   );
-  socket.addEventListener("open", () => {
-    console.log("Successfully connected to server");
-  });
-  socket.addEventListener("message", (event: MessageEvent) => {
-    let message: any;
-    try {
-      message = JSON.parse(event.data);
-    } catch (err) {
-      console.error("Malformed message from server:", event.data);
-      return;
-    }
-    if (message?.event && message?.event !== "error") {
-      retryDelayMs = initialRetryDelayMs;
-    }
-    switch (message?.event) {
-      case "terminalClear":
-        term.reset();
+
+  const initialRetryDelayMs = 200;
+  let retryDelayMs = initialRetryDelayMs;
+
+  function tryConnect() {
+    console.log("Connecting to server...");
+    socket = new WebSocket(
+      (document.location.protocol === "http:" ? "ws://" : "wss://") +
+        document.location.host +
+        `/api/v1/ws?lang=${encodeURIComponent(config.id)}`
+    );
+    socket.addEventListener("open", () => {
+      console.log("Successfully connected to server");
+    });
+    socket.addEventListener("message", (event: MessageEvent) => {
+      let message: any;
+      try {
+        message = JSON.parse(event.data);
+      } catch (err) {
+        console.error("Malformed message from server:", event.data);
         return;
-      case "terminalOutput":
-        if (typeof message.output !== "string") {
+      }
+      if (message?.event && message?.event !== "error") {
+        retryDelayMs = initialRetryDelayMs;
+      }
+      switch (message?.event) {
+        case "terminalClear":
+          term.reset();
+          return;
+        case "terminalOutput":
+          if (typeof message.output !== "string") {
+            console.error("Unexpected message from server:", message);
+            return;
+          }
+          term.write(message.output);
+          return;
+        default:
           console.error("Unexpected message from server:", message);
           return;
-        }
-        term.write(message.output);
-        return;
-      default:
-        console.error("Unexpected message from server:", message);
-        return;
-    }
+      }
+    });
+    socket.addEventListener("close", (event: CloseEvent) => {
+      if (event.wasClean) {
+        console.log("Connection closed cleanly");
+      } else {
+        console.error("Connection died");
+      }
+      scheduleConnect();
+    });
+  }
+
+  function scheduleConnect() {
+    const delay = retryDelayMs * Math.random();
+    console.log(`Trying to reconnect in ${Math.floor(delay)}ms`);
+    setTimeout(tryConnect, delay);
+    retryDelayMs *= 2;
+  }
+
+  let socket: WebSocket | null = null;
+  tryConnect();
+
+  term.onData(
+    (data) =>
+      socket &&
+      socket.send(JSON.stringify({ event: "terminalInput", input: data }))
+  );
+
+  const editor = monaco.editor.create(document.getElementById("editor")!, {
+    minimap: { enabled: false },
+    scrollbar: { verticalScrollbarSize: 0 },
   });
-  socket.addEventListener("close", (event: CloseEvent) => {
-    if (event.wasClean) {
-      console.log("Connection closed cleanly");
-    } else {
-      console.error("Connection died");
-    }
-    scheduleConnect();
+  window.addEventListener("resize", () => editor.layout());
+  editor.getModel()!.setValue(config.template);
+  monaco.editor.setModelLanguage(editor.getModel()!, config.monacoLang);
+
+  document.getElementById("runButton")!.addEventListener("click", () => {
+    socket?.send(JSON.stringify({ event: "runCode", code: editor.getValue() }));
   });
 }
 
-function scheduleConnect() {
-  const delay = retryDelayMs * Math.random();
-  console.log(`Trying to reconnect in ${Math.floor(delay)}ms`);
-  setTimeout(tryConnect, delay);
-  retryDelayMs *= 2;
-}
-
-let socket: WebSocket | null = null;
-tryConnect();
-
-term.onData(
-  (data) =>
-    socket &&
-    socket.send(JSON.stringify({ event: "terminalInput", input: data }))
-);
-
-const editor = monaco.editor.create(document.getElementById("editor")!, {
-  minimap: { enabled: false },
-  scrollbar: { verticalScrollbarSize: 0 },
-});
-window.addEventListener("resize", () => editor.layout());
-editor.getModel()!.setValue(config.template);
-monaco.editor.setModelLanguage(editor.getModel()!, config.monacoLang);
-
-document.getElementById("runButton")!.addEventListener("click", () => {
-  socket?.send(JSON.stringify({ event: "runCode", code: editor.getValue() }));
-});
+main().catch(console.error);
diff --git a/package.json b/package.json
index 3f23bc1..5b3d502 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "riju",
-  "version": "0",
+  "version": "0.0.0",
   "license": "MIT",
   "private": true,
   "dependencies": {
@@ -11,6 +11,7 @@
     "@types/lodash": "^4.14.155",
     "@types/mkdirp": "^1.0.1",
     "@types/parse-passwd": "^1.0.0",
+    "@types/rimraf": "^3.0.0",
     "@types/tmp": "^0.2.0",
     "@types/uuid": "^8.0.0",
     "app-root-path": "^3.0.0",
@@ -21,13 +22,12 @@
     "express-ws": "^4.0.0",
     "file-loader": "^6.0.0",
     "lodash": "^4.17.15",
-    "mkdirp": "^1.0.4",
     "monaco-editor": "^0.20.0",
     "node-cleanup": "^2.1.2",
     "node-pty": "^0.9.0",
+    "npm-run-all": "^4.1.5",
     "parse-passwd": "^1.0.0",
     "style-loader": "^1.2.1",
-    "tmp": "^0.2.1",
     "ts-loader": "^7.0.5",
     "typescript": "^3.9.5",
     "uuid": "^8.1.0",
@@ -38,12 +38,14 @@
   },
   "scripts": {
     "backend": "tsc",
-    "backend-dev": "tsc --watch",
+    "backend-dev": "tsc --watch --preserveWatchOutput",
     "frontend": "webpack --production",
     "frontend-dev": "webpack --development --watch",
     "server": "scripts/setup.bash && node backend/out/server.js",
     "server-dev": "watchexec -w backend/out -r 'scripts/setup.bash && node backend/out/server.js'",
     "system": "scripts/compile-system.bash",
-    "system-dev": "watchexec -w system/src -n scripts/compile-system.bash"
+    "system-dev": "watchexec -w system/src -n scripts/compile-system.bash",
+    "build": "run-s backend frontend system",
+    "dev": "run-p backend-dev frontend-dev system-dev server-dev"
   }
 }
diff --git a/scripts/docker-install-phase0.bash b/scripts/docker-install-phase0.bash
new file mode 100755
index 0000000..7382789
--- /dev/null
+++ b/scripts/docker-install-phase0.bash
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+set -x
+
+export DEBIAN_FRONTEND=noninteractive
+apt-get update
+(yes || true) | unminimize
+rm -rf /var/lib/apt/lists/*
+
+rm "$0"
diff --git a/scripts/docker-install-phase1.bash b/scripts/docker-install-phase1.bash
index fa3932b..5f47de2 100755
--- a/scripts/docker-install-phase1.bash
+++ b/scripts/docker-install-phase1.bash
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+set -x
 
 dpkg --add-architecture i386
 
diff --git a/scripts/docker-install-phase2.bash b/scripts/docker-install-phase2.bash
index 5ec38e5..ac8fdf2 100755
--- a/scripts/docker-install-phase2.bash
+++ b/scripts/docker-install-phase2.bash
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+set -x
 
 packages="
 
diff --git a/scripts/docker-install-phase3a.bash b/scripts/docker-install-phase3a.bash
index 770409d..ea98b4c 100755
--- a/scripts/docker-install-phase3a.bash
+++ b/scripts/docker-install-phase3a.bash
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+set -x
 
 packages="
 
diff --git a/scripts/docker-install-phase3b.bash b/scripts/docker-install-phase3b.bash
index b4ced0b..60e9aad 100755
--- a/scripts/docker-install-phase3b.bash
+++ b/scripts/docker-install-phase3b.bash
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+set -x
 
 packages="
 
diff --git a/scripts/docker-install-phase3c.bash b/scripts/docker-install-phase3c.bash
index 6ca413b..e14bf0c 100755
--- a/scripts/docker-install-phase3c.bash
+++ b/scripts/docker-install-phase3c.bash
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+set -x
 
 packages="
 
diff --git a/scripts/docker-install-phase3d.bash b/scripts/docker-install-phase3d.bash
index 74f09b7..dca024b 100755
--- a/scripts/docker-install-phase3d.bash
+++ b/scripts/docker-install-phase3d.bash
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+set -x
 
 packages="
 
diff --git a/scripts/docker-install-phase4.bash b/scripts/docker-install-phase4.bash
index 69fe156..8274235 100755
--- a/scripts/docker-install-phase4.bash
+++ b/scripts/docker-install-phase4.bash
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+set -x
 
 npm config set unsafe-perm true
 PERL_MM_USE_DEFAULT=1 cpan App::cpanminus
diff --git a/scripts/docker-install-phase5.bash b/scripts/docker-install-phase5.bash
index 4ccbe29..ea3cce3 100755
--- a/scripts/docker-install-phase5.bash
+++ b/scripts/docker-install-phase5.bash
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+set -x
 
 # Needed for project infrastructure
 cd /tmp
diff --git a/scripts/docker-install-phase6.bash b/scripts/docker-install-phase6.bash
index cc0efa2..eefee5a 100755
--- a/scripts/docker-install-phase6.bash
+++ b/scripts/docker-install-phase6.bash
@@ -2,19 +2,22 @@
 
 set -e
 set -o pipefail
+set -x
 
 uid="$1"
 
 rm -rf /tmp/hsperfdata_root
 
 if [[ -n "$uid" ]] && (( "$uid" != 0 )); then
-    useradd --uid="$uid" --create-home --groups sudo docker
-    passwd -d docker
+    useradd --uid="$uid" --password "!" --create-home --groups sudo docker
 else
-    useradd --create-home --groups sudo docker
-    passwd -d docker
+    useradd --password "!" --create-home --groups sudo docker
 fi
 
+tee /etc/sudoers.d/99-passwordless >/dev/null <<"EOF"
+%sudo   ALL=(ALL:ALL) NOPASSWD: ALL
+EOF
+
 touch /home/docker/.zshrc
 chown docker:docker /home/docker/.zshrc
 
diff --git a/scripts/riju-serve.bash b/scripts/riju-serve.bash
index 13e4bb4..123fbbf 100755
--- a/scripts/riju-serve.bash
+++ b/scripts/riju-serve.bash
@@ -18,4 +18,4 @@ else
 fi
 
 docker run ${it} -e TLS -e TLS_PRIVATE_KEY -e TLS_CERTIFICATE \
-       --rm -p 0.0.0.0:80:6119 -p 0.0.0.0:443:6120 riju:prod
+       --rm -p 0.0.0.0:80:6119 -p 0.0.0.0:443:6120 -h riju riju:prod
diff --git a/scripts/setup.bash b/scripts/setup.bash
index b884776..08923fb 100755
--- a/scripts/setup.bash
+++ b/scripts/setup.bash
@@ -4,4 +4,7 @@ set -e
 set -o pipefail
 
 mkdir -p /tmp/riju
-rm -rf /tmp/riju/*
+if [[ -x system/out/riju-system-privileged ]]; then
+    system/out/riju-system-privileged teardown "*"
+fi
+chmod a=x,u=rwx /tmp/riju
diff --git a/system/src/riju-system-privileged.c b/system/src/riju-system-privileged.c
index 6ada086..8ad72d1 100644
--- a/system/src/riju-system-privileged.c
+++ b/system/src/riju-system-privileged.c
@@ -1,14 +1,18 @@
 #define _GNU_SOURCE
+#include <errno.h>
+#include <grp.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
 #include <unistd.h>
 
 // Keep in sync with backend/src/users.ts
 const int MIN_UID = 2000;
 const int MAX_UID = 65000;
 
-void die(const char *msg)
+void die(char *msg)
 {
   fprintf(stderr, "%s\n", msg);
   exit(1);
@@ -17,19 +21,84 @@ void die(const char *msg)
 void die_with_usage()
 {
   die("usage:\n"
-      "  riju-system-privileged useradd UID");
+      "  riju-system-privileged useradd UID\n"
+      "  riju-system-privileged spawn UID CMDLINE...\n"
+      "  riju-system-privileged setup UID UUID\n"
+      "  riju-system-privileged teardown UUID");
+}
+
+int parseUID(char *str)
+{
+  char *endptr;
+  long uid = strtol(str, &endptr, 10);
+  if (!*str || *endptr)
+    die("uid must be an integer");
+  if (uid < MIN_UID || uid >= MAX_UID)
+    die("uid is out of range");
+  return uid;
+}
+
+char *parseUUID(char *uuid)
+{
+  if (!*uuid)
+    die("illegal uuid");
+  for (char *ptr = uuid; *ptr; ++ptr)
+    if (!((*ptr >= 'a' && *ptr <= 'z') || (*ptr >= '0' && *ptr <= '9') || *ptr == '-'))
+      die("illegal uuid");
+  return uuid;
 }
 
 void useradd(int uid)
 {
   char *cmdline;
-  if (asprintf(&cmdline, "useradd -M -N -l -r -u %1$d riju_user%1$d", uid) < 0) {
+  if (asprintf(&cmdline, "groupadd -g %1$d riju%1$d", uid) < 0)
     die("asprintf failed");
-  }
   int status = system(cmdline);
-  if (status) {
+  if (status)
+    die("groupadd failed");
+  if (asprintf(&cmdline, "useradd -M -N -l -r -u %1$d -g %1$d -p '!' riju%1$d", uid) < 0)
+    die("asprintf failed");
+  status = system(cmdline);
+  if (status)
     die("useradd failed");
-  }
+}
+
+void spawn(int uid, char *uuid, char **cmdline)
+{
+  char *cwd;
+  if (asprintf(&cwd, "/tmp/riju/%s", uuid) < 0)
+    die("asprintf failed");
+  if (chdir(cwd) < 0)
+    die("chdir failed");
+  if (setgid(uid) < 0)
+    die("setgid failed");
+  if (setgroups(0, NULL) < 0)
+    die("setgroups failed");
+  if (setuid(uid) < 0)
+    die("setuid failed");
+  umask(077);
+  execvp(cmdline[0], cmdline);
+  die("execvp failed");
+}
+
+void setup(int uid, char *uuid)
+{
+  char *cmdline;
+  if (asprintf(&cmdline, "install -d -o riju%1$d -g riju%1$d -m 700 /tmp/riju/%2$s", uid, uuid) < 0)
+    die("asprintf failed");
+  int status = system(cmdline);
+  if (status)
+    die("install failed");
+}
+
+void teardown(char *uuid)
+{
+  char *cmdline;
+  if (asprintf(&cmdline, "rm -rf /tmp/riju/%s", uuid) < 0)
+    die("asprintf failed");
+  int status = system(cmdline);
+  if (status)
+    die("rm failed");
 }
 
 int main(int argc, char **argv)
@@ -40,15 +109,28 @@ int main(int argc, char **argv)
   if (!strcmp(argv[1], "useradd")) {
     if (argc != 3)
       die_with_usage();
-    char *endptr;
-    long uid = strtol(argv[2], &endptr, 10);
-    if (!argv[2] || *endptr) {
-      die("uid must be an integer");
-    }
-    if (uid < MIN_UID || uid >= MAX_UID) {
-      die("uid is out of range");
-    }
-    useradd(uid);
+    useradd(parseUID(argv[2]));
+    return 0;
+  }
+  if (!strcmp(argv[1], "spawn")) {
+    if (argc < 5)
+      die_with_usage();
+    spawn(parseUID(argv[2]), parseUUID(argv[3]), &argv[4]);
+    return 0;
+  }
+  if (!strcmp(argv[1], "setup")) {
+    if (argc != 4)
+      die_with_usage();
+    int uid = parseUID(argv[2]);
+    char *uuid = parseUUID(argv[3]);
+    setup(uid, uuid);
+    return 0;
+  }
+  if (!strcmp(argv[1], "teardown")) {
+    if (argc != 3)
+      die_with_usage();
+    char *uuid = strcmp(argv[2], "*") ? parseUUID(argv[2]) : "*";
+    teardown(uuid);
     return 0;
   }
   die_with_usage();
diff --git a/yarn.lock b/yarn.lock
index a312345..72b89b7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -55,6 +55,14 @@
     "@types/qs" "*"
     "@types/serve-static" "*"
 
+"@types/glob@*":
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/@types/glob/-/glob-7.1.2.tgz#06ca26521353a545d94a0adc74f38a59d232c987"
+  integrity sha512-VgNIkxK+j7Nz5P7jvUZlRvhuPSmsEfS03b0alKcq5V/STUKAa3Plemsn5mrQUO7am6OErJ4rhGEGJbACclrtRA==
+  dependencies:
+    "@types/minimatch" "*"
+    "@types/node" "*"
+
 "@types/json-schema@^7.0.4":
   version "7.0.4"
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.4.tgz#38fd73ddfd9b55abb1e1b2ed578cb55bd7b7d339"
@@ -70,6 +78,11 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-2.0.2.tgz#857a118d8634c84bba7ae14088e4508490cd5da5"
   integrity sha512-4kPlzbljFcsttWEq6aBW0OZe6BDajAmyvr2xknBG92tejQnvdGtT9+kXSZ580DqpxY9qG2xeQVF9Dq0ymUTo5Q==
 
+"@types/minimatch@*":
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
+  integrity sha512-tHq6qdbT9U1IRSGf14CL0pUlULksvY9OZ+5eEgl1N7t+OA3tGvNpxJCzuKQlsNgCVwbAs670L1vcVQi8j9HjnA==
+
 "@types/mkdirp@^1.0.1":
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/@types/mkdirp/-/mkdirp-1.0.1.tgz#0930b948914a78587de35458b86c907b6e98bbf6"
@@ -97,6 +110,14 @@
   resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.3.tgz#7ee330ba7caafb98090bece86a5ee44115904c2c"
   integrity sha512-ewFXqrQHlFsgc09MK5jP5iR7vumV/BYayNC6PgJO2LPe8vrnNFyjQjSppfEngITi0qvfKtzFvgKymGheFM9UOA==
 
+"@types/rimraf@^3.0.0":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/rimraf/-/rimraf-3.0.0.tgz#b9d03f090ece263671898d57bb7bb007023ac19f"
+  integrity sha512-7WhJ0MdpFgYQPXlF4Dx+DhgvlPCfz/x5mHaeDQAKhcenvQP1KCpLQ18JklAqeGMYSAT2PxLpzd0g2/HE7fj7hQ==
+  dependencies:
+    "@types/glob" "*"
+    "@types/node" "*"
+
 "@types/serve-static@*":
   version "1.13.4"
   resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.13.4.tgz#6662a93583e5a6cabca1b23592eb91e12fa80e7c"
@@ -663,7 +684,7 @@ camelcase@^5.0.0, camelcase@^5.3.1:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
   integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
 
-chalk@2.4.2, chalk@^2.3.0, chalk@^2.4.2:
+chalk@2.4.2, chalk@^2.3.0, chalk@^2.4.1, chalk@^2.4.2:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
   integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
@@ -880,7 +901,7 @@ create-hmac@^1.1.0, create-hmac@^1.1.4, create-hmac@^1.1.7:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
 
-cross-spawn@6.0.5, cross-spawn@^6.0.0:
+cross-spawn@6.0.5, cross-spawn@^6.0.0, cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
   integrity sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==
@@ -954,6 +975,13 @@ decode-uri-component@^0.2.0:
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
   integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
 
+define-properties@^1.1.2, define-properties@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.3.tgz#cf88da6cbee26fe6db7094f61d870cbd84cee9f1"
+  integrity sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==
+  dependencies:
+    object-keys "^1.0.12"
+
 define-property@^0.2.5:
   version "0.2.5"
   resolved "https://registry.yarnpkg.com/define-property/-/define-property-0.2.5.tgz#c35b1ef918ec3c990f9a5bc57be04aacec5c8116"
@@ -1100,6 +1128,39 @@ errno@^0.1.3, errno@~0.1.7:
   dependencies:
     prr "~1.0.1"
 
+error-ex@^1.3.1:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
+  integrity sha512-7dFHNmqeFSEt2ZBsCriorKnn3Z2pj+fd9kmI6QoWw4//DL+icEBfc0U7qJCisqrTsKTjw4fNFy2pW9OqStD84g==
+  dependencies:
+    is-arrayish "^0.2.1"
+
+es-abstract@^1.17.0-next.1, es-abstract@^1.17.5:
+  version "1.17.6"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.17.6.tgz#9142071707857b2cacc7b89ecb670316c3e2d52a"
+  integrity sha512-Fr89bON3WFyUi5EvAeI48QTWX0AyekGgLA8H+c+7fbfCkJwRWRMLd8CQedNEyJuoYYhmtEqY92pgte1FAhBlhw==
+  dependencies:
+    es-to-primitive "^1.2.1"
+    function-bind "^1.1.1"
+    has "^1.0.3"
+    has-symbols "^1.0.1"
+    is-callable "^1.2.0"
+    is-regex "^1.1.0"
+    object-inspect "^1.7.0"
+    object-keys "^1.1.1"
+    object.assign "^4.1.0"
+    string.prototype.trimend "^1.0.1"
+    string.prototype.trimstart "^1.0.1"
+
+es-to-primitive@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.1.tgz#e55cd4c9cdc188bcefb03b366c736323fc5c898a"
+  integrity sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==
+  dependencies:
+    is-callable "^1.1.4"
+    is-date-object "^1.0.1"
+    is-symbol "^1.0.2"
+
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -1410,6 +1471,11 @@ fsevents@~2.1.2:
   resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.1.3.tgz#fb738703ae8d2f9fe900c33836ddebee8b97f23e"
   integrity sha512-Auw9a4AxqWpa9GUfj370BMPzzyncfBABW8Mab7BGWBYDj4Isgq+cDKtx0i6u9jcX9pQDnswsaaOTgTmA5pEjuQ==
 
+function-bind@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
+  integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
+
 get-caller-file@^2.0.1:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
@@ -1500,6 +1566,11 @@ has-flag@^3.0.0:
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
   integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
 
+has-symbols@^1.0.0, has-symbols@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.1.tgz#9f5214758a44196c406d9bd76cebf81ec2dd31e8"
+  integrity sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg==
+
 has-value@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/has-value/-/has-value-0.3.1.tgz#7b1f58bada62ca827ec0a2078025654845995e1f"
@@ -1531,6 +1602,13 @@ has-values@^1.0.0:
     is-number "^3.0.0"
     kind-of "^4.0.0"
 
+has@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
+  integrity sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==
+  dependencies:
+    function-bind "^1.1.1"
+
 hash-base@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/hash-base/-/hash-base-3.1.0.tgz#55c381d9e06e1d2997a883b4a3fddfe7f0d3af33"
@@ -1564,6 +1642,11 @@ homedir-polyfill@^1.0.1:
   dependencies:
     parse-passwd "^1.0.0"
 
+hosted-git-info@^2.1.4:
+  version "2.8.8"
+  resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.8.tgz#7539bd4bc1e0e0a895815a2e0262420b12858488"
+  integrity sha512-f/wzC2QaWBs7t9IYqB4T3sR1xviIViXJRJTWBlx2Gf3g0Xi5vI7Yy4koXQ1c9OYDGHN9sBy1DQ2AB8fqZBWhUg==
+
 http-errors@1.7.2:
   version "1.7.2"
   resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
@@ -1695,6 +1778,11 @@ is-accessor-descriptor@^1.0.0:
   dependencies:
     kind-of "^6.0.0"
 
+is-arrayish@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
+  integrity sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0=
+
 is-binary-path@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-binary-path/-/is-binary-path-1.0.1.tgz#75f16642b480f187a711c814161fd3a4a7655898"
@@ -1714,6 +1802,11 @@ is-buffer@^1.1.5:
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
   integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
 
+is-callable@^1.1.4, is-callable@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.2.0.tgz#83336560b54a38e35e3a2df7afd0454d691468bb"
+  integrity sha512-pyVD9AaGLxtg6srb2Ng6ynWJqkHU9bEM087AKck0w8QwDarTfNcpIYoU8x8Hv2Icm8u6kFJM18Dag8lyqGkviw==
+
 is-data-descriptor@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
@@ -1728,6 +1821,11 @@ is-data-descriptor@^1.0.0:
   dependencies:
     kind-of "^6.0.0"
 
+is-date-object@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.2.tgz#bda736f2cd8fd06d32844e7743bfa7494c3bfd7e"
+  integrity sha512-USlDT524woQ08aoZFzh3/Z6ch9Y/EWXEHQ/AaRN0SkKq4t2Jw2R2339tSXmwuVoY7LLlBCbOIlx2myP/L5zk0g==
+
 is-descriptor@^0.1.0:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-0.1.6.tgz#366d8240dde487ca51823b1ab9f07a10a78251ca"
@@ -1801,11 +1899,25 @@ is-plain-object@^2.0.3, is-plain-object@^2.0.4:
   dependencies:
     isobject "^3.0.1"
 
+is-regex@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.1.0.tgz#ece38e389e490df0dc21caea2bd596f987f767ff"
+  integrity sha512-iI97M8KTWID2la5uYXlkbSDQIg4F6o1sYboZKKTDpnDQMLtUL86zxhgDet3Q2SriaYsyGqZ6Mn2SjbRKeLHdqw==
+  dependencies:
+    has-symbols "^1.0.1"
+
 is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
   integrity sha1-EtSj3U5o4Lec6428hBc66A2RykQ=
 
+is-symbol@^1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.3.tgz#38e1014b9e6329be0de9d24a414fd7441ec61937"
+  integrity sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==
+  dependencies:
+    has-symbols "^1.0.1"
+
 is-windows@^1.0.1, is-windows@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
@@ -1848,7 +1960,7 @@ jake@^10.6.1:
     filelist "^1.0.1"
     minimatch "^3.0.4"
 
-json-parse-better-errors@^1.0.2:
+json-parse-better-errors@^1.0.1, json-parse-better-errors@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
   integrity sha512-mrqyZKfX5EhL7hvqcV6WG1yYjnjeuYDzDhhcAAUrq8Po85NBQBJP+ZDUT75qZQ98IkUoBqdkExkukOU7Ts2wrw==
@@ -1903,6 +2015,16 @@ lcid@^2.0.0:
   dependencies:
     invert-kv "^2.0.0"
 
+load-json-file@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-4.0.0.tgz#2f5f45ab91e33216234fd53adab668eb4ec0993b"
+  integrity sha1-L19Fq5HjMhYjT9U62rZo607AmTs=
+  dependencies:
+    graceful-fs "^4.1.2"
+    parse-json "^4.0.0"
+    pify "^3.0.0"
+    strip-bom "^3.0.0"
+
 loader-runner@^2.4.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/loader-runner/-/loader-runner-2.4.0.tgz#ed47066bfe534d7e84c4c7b9998c2a75607d9357"
@@ -2021,6 +2143,11 @@ memory-fs@^0.5.0:
     errno "^0.1.3"
     readable-stream "^2.0.1"
 
+memorystream@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/memorystream/-/memorystream-0.3.1.tgz#86d7090b30ce455d63fbae12dda51a47ddcaf9b2"
+  integrity sha1-htcJCzDORV1j+64S3aUaR93K+bI=
+
 merge-descriptors@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
@@ -2141,11 +2268,6 @@ mkdirp@^0.5.1, mkdirp@^0.5.3:
   dependencies:
     minimist "^1.2.5"
 
-mkdirp@^1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
-  integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
-
 monaco-editor@^0.20.0:
   version "0.20.0"
   resolved "https://registry.yarnpkg.com/monaco-editor/-/monaco-editor-0.20.0.tgz#5d5009343a550124426cb4d965a4d27a348b4dea"
@@ -2251,6 +2373,16 @@ node-pty@^0.9.0:
   dependencies:
     nan "^2.14.0"
 
+normalize-package-data@^2.3.2:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.5.0.tgz#e66db1838b200c1dfc233225d12cb36520e234a8"
+  integrity sha512-/5CMN3T0R4XTj4DcGaexo+roZSdSFW/0AOOTROrjxzCG1wrWXEsGbRKevjlIL+ZDE4sZlJr5ED4YW0yqmkK+eA==
+  dependencies:
+    hosted-git-info "^2.1.4"
+    resolve "^1.10.0"
+    semver "2 || 3 || 4 || 5"
+    validate-npm-package-license "^3.0.1"
+
 normalize-path@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-2.1.1.tgz#1ab28b556e198363a8c1a6f7e6fa20137fe6aed9"
@@ -2263,6 +2395,21 @@ normalize-path@^3.0.0, normalize-path@~3.0.0:
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
   integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
 
+npm-run-all@^4.1.5:
+  version "4.1.5"
+  resolved "https://registry.yarnpkg.com/npm-run-all/-/npm-run-all-4.1.5.tgz#04476202a15ee0e2e214080861bff12a51d98fba"
+  integrity sha512-Oo82gJDAVcaMdi3nuoKFavkIHBRVqQ1qvMb+9LHk/cF4P6B2m8aP04hGf7oL6wZ9BuGwX1onlLhpuoofSyoQDQ==
+  dependencies:
+    ansi-styles "^3.2.1"
+    chalk "^2.4.1"
+    cross-spawn "^6.0.5"
+    memorystream "^0.3.1"
+    minimatch "^3.0.4"
+    pidtree "^0.3.0"
+    read-pkg "^3.0.0"
+    shell-quote "^1.6.1"
+    string.prototype.padend "^3.0.0"
+
 npm-run-path@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
@@ -2284,6 +2431,16 @@ object-copy@^0.1.0:
     define-property "^0.2.5"
     kind-of "^3.0.3"
 
+object-inspect@^1.7.0:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.8.0.tgz#df807e5ecf53a609cc6bfe93eac3cc7be5b3a9d0"
+  integrity sha512-jLdtEOB112fORuypAyl/50VRVIBIdVQOSUUGQHzJ4xBSbit81zRarz7GThkEFZy1RceYrWYcPcBFPQwHyAc1gA==
+
+object-keys@^1.0.11, object-keys@^1.0.12, object-keys@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.1.1.tgz#1c47f272df277f3b1daf061677d9c82e2322c60e"
+  integrity sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==
+
 object-visit@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/object-visit/-/object-visit-1.0.1.tgz#f79c4493af0c5377b59fe39d395e41042dd045bb"
@@ -2291,6 +2448,16 @@ object-visit@^1.0.0:
   dependencies:
     isobject "^3.0.0"
 
+object.assign@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/object.assign/-/object.assign-4.1.0.tgz#968bf1100d7956bb3ca086f006f846b3bc4008da"
+  integrity sha512-exHJeq6kBKj58mqGyTQ9DFvrZC/eR6OwxzoM9YRoGBqrXYonaFyGiFMuc9VZrXf7DarreEwMpurG3dd+CNyW5w==
+  dependencies:
+    define-properties "^1.1.2"
+    function-bind "^1.1.1"
+    has-symbols "^1.0.0"
+    object-keys "^1.0.11"
+
 object.pick@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/object.pick/-/object.pick-1.3.0.tgz#87a10ac4c1694bd2e1cbf53591a66141fb5dd747"
@@ -2386,6 +2553,14 @@ parse-asn1@^5.0.0, parse-asn1@^5.1.5:
     pbkdf2 "^3.0.3"
     safe-buffer "^5.1.1"
 
+parse-json@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-4.0.0.tgz#be35f5425be1f7f6c747184f98a788cb99477ee0"
+  integrity sha1-vjX1Qlvh9/bHRxhPmKeIy5lHfuA=
+  dependencies:
+    error-ex "^1.3.1"
+    json-parse-better-errors "^1.0.1"
+
 parse-passwd@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/parse-passwd/-/parse-passwd-1.0.0.tgz#6d5b934a456993b23d37f40a382d6f1666a8e5c6"
@@ -2426,11 +2601,23 @@ path-key@^2.0.0, path-key@^2.0.1:
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
   integrity sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=
 
+path-parse@^1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
+  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
+
 path-to-regexp@0.1.7:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
   integrity sha1-32BBeABfUi8V60SQ5yR6G/qmf4w=
 
+path-type@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-type/-/path-type-3.0.0.tgz#cef31dc8e0a1a3bb0d105c0cd97cf3bf47f4e36f"
+  integrity sha512-T2ZUsdZFHgA3u4e5PfPbjd7HDDpxPnQb5jN0SrDsjNSuVXHJqtwTnWqG0B1jZrgmJ/7lj1EmVIByWt1gxGkWvg==
+  dependencies:
+    pify "^3.0.0"
+
 pbkdf2@^3.0.3:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.1.1.tgz#cb8724b0fada984596856d1a6ebafd3584654b94"
@@ -2447,6 +2634,16 @@ picomatch@^2.0.4, picomatch@^2.0.5, picomatch@^2.2.1:
   resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
   integrity sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==
 
+pidtree@^0.3.0:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/pidtree/-/pidtree-0.3.1.tgz#ef09ac2cc0533df1f3250ccf2c4d366b0d12114a"
+  integrity sha512-qQbW94hLHEqCg7nhby4yRC7G2+jYHY4Rguc2bjw7Uug4GIJuu1tvf2uHaZv5Q8zdt+WKJ6qK1FOI6amaWUo5FA==
+
+pify@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
+  integrity sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=
+
 pify@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/pify/-/pify-4.0.1.tgz#4b2cd25c50d598735c50292224fd8c6df41e3231"
@@ -2645,6 +2842,15 @@ raw-body@2.4.0:
     iconv-lite "0.4.24"
     unpipe "1.0.0"
 
+read-pkg@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-3.0.0.tgz#9cbc686978fee65d16c00e2b19c237fcf6e38389"
+  integrity sha1-nLxoaXj+5l0WwA4rGcI3/Pbjg4k=
+  dependencies:
+    load-json-file "^4.0.0"
+    normalize-package-data "^2.3.2"
+    path-type "^3.0.0"
+
 "readable-stream@1 || 2", readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.3.3, readable-stream@^2.3.6, readable-stream@~2.3.6:
   version "2.3.7"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
@@ -2741,6 +2947,13 @@ resolve-url@^0.2.1:
   resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
   integrity sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=
 
+resolve@^1.10.0:
+  version "1.17.0"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.17.0.tgz#b25941b54968231cc2d1bb76a79cb7f2c0bf8444"
+  integrity sha512-ic+7JYiV8Vi2yzQGFWOkiZD5Z9z7O2Zhm9XMaTxdJExKasieFCr+yXZ/WmXsckHiKl12ar0y6XiXDx3m4RHn1w==
+  dependencies:
+    path-parse "^1.0.6"
+
 ret@~0.1.10:
   version "0.1.15"
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
@@ -2753,13 +2966,6 @@ rimraf@^2.5.4, rimraf@^2.6.3:
   dependencies:
     glob "^7.1.3"
 
-rimraf@^3.0.0:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-3.0.2.tgz#f1a5402ba6220ad52cc1282bac1ae3aa49fd061a"
-  integrity sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==
-  dependencies:
-    glob "^7.1.3"
-
 ripemd160@^2.0.0, ripemd160@^2.0.1:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/ripemd160/-/ripemd160-2.0.2.tgz#a1c1a6f624751577ba5d07914cbc92850585890c"
@@ -2815,7 +3021,7 @@ schema-utils@^2.6.5, schema-utils@^2.6.6:
     ajv "^6.12.2"
     ajv-keywords "^3.4.1"
 
-semver@^5.5.0, semver@^5.6.0:
+"semver@2 || 3 || 4 || 5", semver@^5.5.0, semver@^5.6.0:
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
   integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
@@ -2906,6 +3112,11 @@ shebang-regex@^1.0.0:
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
   integrity sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=
 
+shell-quote@^1.6.1:
+  version "1.7.2"
+  resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.7.2.tgz#67a7d02c76c9da24f99d20808fcaded0e0e04be2"
+  integrity sha512-mRz/m/JVscCrkMyPqHc/bczi3OQHkLTqXHEFu0zDhK/qfv3UcOA4SVmRCLmos4bhjr9ekVQubj/R7waKapmiQg==
+
 signal-exit@^3.0.0:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.3.tgz#a1410c2edd8f077b08b4e253c8eacfcaf057461c"
@@ -2980,6 +3191,32 @@ source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.1:
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
   integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
 
+spdx-correct@^3.0.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/spdx-correct/-/spdx-correct-3.1.1.tgz#dece81ac9c1e6713e5f7d1b6f17d468fa53d89a9"
+  integrity sha512-cOYcUWwhCuHCXi49RhFRCyJEK3iPj1Ziz9DpViV3tbZOwXD49QzIN3MpOLJNxh2qwq2lJJZaKMVw9qNi4jTC0w==
+  dependencies:
+    spdx-expression-parse "^3.0.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-exceptions@^2.1.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/spdx-exceptions/-/spdx-exceptions-2.3.0.tgz#3f28ce1a77a00372683eade4a433183527a2163d"
+  integrity sha512-/tTrYOC7PPI1nUAgx34hUpqXuyJG+DTHJTnIULG4rDygi4xu/tfgmq1e1cIRwRzwZgo4NLySi+ricLkZkw4i5A==
+
+spdx-expression-parse@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/spdx-expression-parse/-/spdx-expression-parse-3.0.1.tgz#cf70f50482eefdc98e3ce0a6833e4a53ceeba679"
+  integrity sha512-cbqHunsQWnJNE6KhVSMsMeH5H/L9EpymbzqTQ3uLwNCLZ1Q481oWaofqH7nO6V07xlXwY6PhQdQ2IedWx/ZK4Q==
+  dependencies:
+    spdx-exceptions "^2.1.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-license-ids@^3.0.0:
+  version "3.0.5"
+  resolved "https://registry.yarnpkg.com/spdx-license-ids/-/spdx-license-ids-3.0.5.tgz#3694b5804567a458d3c8045842a6358632f62654"
+  integrity sha512-J+FWzZoynJEXGphVIS+XEh3kFSjZX/1i9gFBaWQcB+/tmpe2qUsSBABpcxqxnAxFdiUFEgAX1bjYGQvIZmoz9Q==
+
 split-string@^3.0.1, split-string@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/split-string/-/split-string-3.1.0.tgz#7cb09dda3a86585705c64b39a6466038682e8fe2"
@@ -3048,6 +3285,30 @@ string-width@^3.0.0, string-width@^3.1.0:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^5.1.0"
 
+string.prototype.padend@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/string.prototype.padend/-/string.prototype.padend-3.1.0.tgz#dc08f57a8010dc5c153550318f67e13adbb72ac3"
+  integrity sha512-3aIv8Ffdp8EZj8iLwREGpQaUZiPyrWrpzMBHvkiSW/bK/EGve9np07Vwy7IJ5waydpGXzQZu/F8Oze2/IWkBaA==
+  dependencies:
+    define-properties "^1.1.3"
+    es-abstract "^1.17.0-next.1"
+
+string.prototype.trimend@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimend/-/string.prototype.trimend-1.0.1.tgz#85812a6b847ac002270f5808146064c995fb6913"
+  integrity sha512-LRPxFUaTtpqYsTeNKaFOw3R4bxIzWOnbQ837QfBylo8jIxtcbK/A/sMV7Q+OAV/vWo+7s25pOE10KYSjaSO06g==
+  dependencies:
+    define-properties "^1.1.3"
+    es-abstract "^1.17.5"
+
+string.prototype.trimstart@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimstart/-/string.prototype.trimstart-1.0.1.tgz#14af6d9f34b053f7cfc89b72f8f2ee14b9039a54"
+  integrity sha512-XxZn+QpvrBI1FOcg6dIpxUPgWCPuNXvMD72aaRaUQv1eD4e/Qy8i/hFTe0BUmD60p/QA6bh1avmuPTfNjqVWRw==
+  dependencies:
+    define-properties "^1.1.3"
+    es-abstract "^1.17.5"
+
 string_decoder@^1.0.0, string_decoder@^1.1.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.3.0.tgz#42f114594a46cf1a8e30b0a84f56c78c3edac21e"
@@ -3069,6 +3330,11 @@ strip-ansi@^5.0.0, strip-ansi@^5.1.0, strip-ansi@^5.2.0:
   dependencies:
     ansi-regex "^4.1.0"
 
+strip-bom@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-3.0.0.tgz#2334c18e9c759f7bdd56fdef7e9ae3d588e68ed3"
+  integrity sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=
+
 strip-eof@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
@@ -3140,13 +3406,6 @@ timers-browserify@^2.0.4:
   dependencies:
     setimmediate "^1.0.4"
 
-tmp@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.2.1.tgz#8457fc3037dcf4719c251367a1af6500ee1ccf14"
-  integrity sha512-76SUhtfqR2Ijn+xllcI5P1oyannHNHByD80W1q447gU3mp9G9PSpGdWmjUOHRDPiHYacIk66W7ubDTuPF3BEtQ==
-  dependencies:
-    rimraf "^3.0.0"
-
 to-arraybuffer@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz#7d229b1fcc637e466ca081180836a7aabff83f43"
@@ -3334,6 +3593,14 @@ v8-compile-cache@2.0.3:
   resolved "https://registry.yarnpkg.com/v8-compile-cache/-/v8-compile-cache-2.0.3.tgz#00f7494d2ae2b688cfe2899df6ed2c54bef91dbe"
   integrity sha512-CNmdbwQMBjwr9Gsmohvm0pbL954tJrNzf6gWL3K+QMQf00PF7ERGrEiLgjuU3mKreLC2MeGhUsNV9ybTbLgd3w==
 
+validate-npm-package-license@^3.0.1:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
+  integrity sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==
+  dependencies:
+    spdx-correct "^3.0.0"
+    spdx-expression-parse "^3.0.0"
+
 vary@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"