diff --git a/.gitignore b/.gitignore
index 552f2218..2397cdfe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,8 @@
 node_modules/
 *.log
+
+# Don't commit the clasp configurations for samples.
+samples/**/.clasp.json
+# Don't commit secrets files, used to hold client IDs and secrets without
+# needing to modify checked in code.
+samples/**/Secrets.gs
diff --git a/package-lock.json b/package-lock.json
index 1d7afae8..bb2daf46 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,25 +5,28 @@
   "requires": true,
   "dependencies": {
     "@google/clasp": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/@google/clasp/-/clasp-1.1.5.tgz",
-      "integrity": "sha512-p6e1nHqE01fbolCrPVmx0/vi97Q3UPOrCLzvT5okYkH7qz/GNPcUrCv1woPc+T0mvYPGU6cuqiB3fUYW0F304w==",
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/@google/clasp/-/clasp-1.5.0.tgz",
+      "integrity": "sha512-IdjDmp5pOus5oR9cGyCj5YUzoewR47nsJMN13hp+DQWZnTnIh+/H4ieQR5aT4Jr6KEY4f6Avqf0ViMqrdRC6yA==",
       "dev": true,
       "requires": {
         "anymatch": "1.3.2",
-        "bluebird": "3.5.1",
+        "axios": "0.18.0",
+        "chalk": "2.4.1",
         "cli-spinner": "0.2.8",
-        "commander": "2.14.1",
+        "commander": "2.16.0",
         "connect": "3.6.6",
         "del": "3.0.0",
         "dotf": "1.0.3",
         "find-parent-dir": "0.3.0",
         "fs": "0.0.1-security",
-        "googleapis": "25.0.0",
+        "google-auth-library": "1.6.1",
+        "googleapis": "28.1.0",
         "http-shutdown": "1.2.0",
+        "inquirer": "5.2.0",
         "is-online": "7.0.0",
         "mkdirp": "0.5.1",
-        "open": "0.0.5",
+        "opn": "5.3.0",
         "path": "0.12.7",
         "pluralize": "7.0.0",
         "read-file": "0.2.0",
@@ -31,9 +34,38 @@
         "readline": "1.3.0",
         "recursive-readdir": "2.2.2",
         "split-lines": "1.1.0",
-        "url": "0.11.0"
+        "string.prototype.padend": "3.0.0",
+        "ts2gas": "1.0.0",
+        "url": "0.11.0",
+        "watch": "1.0.2"
       },
       "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "1.9.1"
+          }
+        },
+        "chalk": {
+          "version": "2.4.1",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
+          "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "3.2.1",
+            "escape-string-regexp": "1.0.5",
+            "supports-color": "5.4.0"
+          }
+        },
         "del": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/del/-/del-3.0.0.tgz",
@@ -83,6 +115,39 @@
             }
           }
         },
+        "has-flag": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+          "dev": true
+        },
+        "inquirer": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/inquirer/-/inquirer-5.2.0.tgz",
+          "integrity": "sha512-E9BmnJbAKLPGonz0HeWHtbKf+EeSP93paWO3ZYoUpq/aowXvYGjjCSuashhXPpzbArIjBbji39THkxTz9ZeEUQ==",
+          "dev": true,
+          "requires": {
+            "ansi-escapes": "3.0.0",
+            "chalk": "2.4.1",
+            "cli-cursor": "2.1.0",
+            "cli-width": "2.2.0",
+            "external-editor": "2.1.0",
+            "figures": "2.0.0",
+            "lodash": "4.17.10",
+            "mute-stream": "0.0.7",
+            "run-async": "2.3.0",
+            "rxjs": "5.5.11",
+            "string-width": "2.1.1",
+            "strip-ansi": "4.0.0",
+            "through": "2.3.8"
+          }
+        },
+        "lodash": {
+          "version": "4.17.10",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.10.tgz",
+          "integrity": "sha512-UejweD1pDoXu+AD825lWwp4ZGtSwgnpZxb3JDViD7StjQz+Nb/6l093lx4OQ0foGWNRoc19mWy7BzL+UAK2iVg==",
+          "dev": true
+        },
         "object-assign": {
           "version": "4.1.1",
           "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -94,6 +159,24 @@
           "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
           "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
           "dev": true
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "3.0.0"
+          }
+        },
+        "supports-color": {
+          "version": "5.4.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.4.0.tgz",
+          "integrity": "sha512-zjaXglF5nnWpsq470jSv6P9DwPvgLkuapYmfDm3JWOm0vkNTVF2tI4UrN2r6jH1qM/uc/WtxYY1hYoA2dOKj5w==",
+          "dev": true,
+          "requires": {
+            "has-flag": "3.0.0"
+          }
         }
       }
     },
@@ -419,7 +502,7 @@
       "integrity": "sha1-MtU+SFHv3AoRmTts0AB4nXDAUQI=",
       "dev": true,
       "requires": {
-        "follow-redirects": "1.4.1",
+        "follow-redirects": "1.5.1",
         "is-buffer": "1.1.6"
       }
     },
@@ -461,12 +544,6 @@
         "pascalcase": "0.1.1"
       }
     },
-    "base64url": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/base64url/-/base64url-2.0.0.tgz",
-      "integrity": "sha1-6sFuA+oUOO/5Qj1puqNiYu0fcLs=",
-      "dev": true
-    },
     "beeper": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/beeper/-/beeper-1.1.1.tgz",
@@ -556,6 +633,14 @@
         "lowercase-keys": "1.0.0",
         "normalize-url": "2.0.1",
         "responselike": "1.0.2"
+      },
+      "dependencies": {
+        "lowercase-keys": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/lowercase-keys/-/lowercase-keys-1.0.0.tgz",
+          "integrity": "sha1-TjNms55/VFfjXxMkvfb4jQv8cwY=",
+          "dev": true
+        }
       }
     },
     "caller-path": {
@@ -774,7 +859,7 @@
       "integrity": "sha1-0dyXOSAxTfZ/vrlCI7TuNQI56Ws=",
       "dev": true,
       "requires": {
-        "mimic-response": "1.0.0"
+        "mimic-response": "1.0.1"
       }
     },
     "clone-stats": {
@@ -840,9 +925,9 @@
       "dev": true
     },
     "commander": {
-      "version": "2.14.1",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.14.1.tgz",
-      "integrity": "sha512-+YR16o3rK53SmWHU3rEM3tPAh2rwb1yPcQX5irVn7mb0gXbwuCCrnkbV5+PBfETdfg1vui07nM6PCG1zndcjQw==",
+      "version": "2.16.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.16.0.tgz",
+      "integrity": "sha512-sVXqklSaotK9at437sFlFpyOcJonxe0yST/AG9DkQKUdIE6IqGIMv4SfAQSKaJbSdVEJYItASCrBiVQHq1HQew==",
       "dev": true
     },
     "component-emitter": {
@@ -1031,7 +1116,7 @@
       "integrity": "sha1-gKTdMjdIOEv6JICDYirt7Jgq3/M=",
       "dev": true,
       "requires": {
-        "mimic-response": "1.0.0"
+        "mimic-response": "1.0.1"
       }
     },
     "deep-eql": {
@@ -1058,6 +1143,24 @@
         "clone": "1.0.3"
       }
     },
+    "define-properties": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.2.tgz",
+      "integrity": "sha1-g6c/L+pWmJj7c3GTyPhzyvbUXJQ=",
+      "dev": true,
+      "requires": {
+        "foreach": "2.0.5",
+        "object-keys": "1.0.12"
+      },
+      "dependencies": {
+        "object-keys": {
+          "version": "1.0.12",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.0.12.tgz",
+          "integrity": "sha512-FTMyFUm2wBcGHnH2eXmz7tC6IwlqQZ6mVZ+6dm6vZ4IQIHjs6FdNsQBuKGPuUUUY6NfJw2PshC08Tn6LzLDOag==",
+          "dev": true
+        }
+      }
+    },
     "define-property": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/define-property/-/define-property-1.0.0.tgz",
@@ -1082,9 +1185,9 @@
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-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.1.tgz",
-      "integrity": "sha1-V4O04cRZ8G+lyif5kfPQbnoxA1k=",
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
+      "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=",
       "dev": true
     },
     "deprecated": {
@@ -1170,12 +1273,11 @@
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     "ecdsa-sig-formatter": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.9.tgz",
-      "integrity": "sha1-S8kmJ07Dtau1AW5+HWCSGsJisqE=",
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.10.tgz",
+      "integrity": "sha1-HFlQAPBKiJffuFAAiSoPTDOvhsM=",
       "dev": true,
       "requires": {
-        "base64url": "2.0.0",
         "safe-buffer": "5.1.1"
       }
     },
@@ -1220,6 +1322,30 @@
         "is-arrayish": "0.2.1"
       }
     },
+    "es-abstract": {
+      "version": "1.12.0",
+      "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.12.0.tgz",
+      "integrity": "sha512-C8Fx/0jFmV5IPoMOFPA9P9G5NtqW+4cOPit3MIuvR2t7Ag2K15EJTpxnHAYTzL+aYQJIESYeXZmDBfOBE1HcpA==",
+      "dev": true,
+      "requires": {
+        "es-to-primitive": "1.1.1",
+        "function-bind": "1.1.1",
+        "has": "1.0.3",
+        "is-callable": "1.1.4",
+        "is-regex": "1.0.4"
+      }
+    },
+    "es-to-primitive": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.1.1.tgz",
+      "integrity": "sha1-RTVSSKiJeQNLZ5Lhm7gfK3l13Q0=",
+      "dev": true,
+      "requires": {
+        "is-callable": "1.1.4",
+        "is-date-object": "1.0.1",
+        "is-symbol": "1.0.1"
+      }
+    },
     "escape-html": {
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       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -1447,6 +1573,15 @@
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       "dev": true
     },
+    "exec-sh": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/exec-sh/-/exec-sh-0.2.2.tgz",
+      "integrity": "sha512-FIUCJz1RbuS0FKTdaAafAByGS0CPvU3R0MeHxgtl+djzCc//F8HakL8GzmVNZanasTbTAY/3DRFA0KpVqj/eAw==",
+      "dev": true,
+      "requires": {
+        "merge": "1.2.0"
+      }
+    },
     "expand-brackets": {
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       "resolved": "https://registry.npmjs.org/expand-brackets/-/expand-brackets-2.1.4.tgz",
@@ -1536,18 +1671,18 @@
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       "dev": true,
       "requires": {
-        "fill-range": "2.2.3"
+        "fill-range": "2.2.4"
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       "dependencies": {
         "fill-range": {
-          "version": "2.2.3",
-          "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-2.2.3.tgz",
-          "integrity": "sha1-ULd9/X5Gm8dJJHCWNpn+eoSFpyM=",
+          "version": "2.2.4",
+          "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-2.2.4.tgz",
+          "integrity": "sha512-cnrcCbj01+j2gTG921VZPnHbjmdAf8oQV/iGeV2kZxGSyfYjjTyY79ErsK1WJWMpw6DaApEX72binqJE+/d+5Q==",
           "dev": true,
           "requires": {
             "is-number": "2.1.0",
             "isobject": "2.1.0",
-            "randomatic": "1.1.7",
+            "randomatic": "3.0.0",
             "repeat-element": "1.1.2",
             "repeat-string": "1.6.1"
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@@ -1930,9 +2065,9 @@
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-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.4.1.tgz",
-      "integrity": "sha512-uxYePVPogtya1ktGnAAXOacnbIuRMB4dkvqeNz2qTtTQsuzSfbDolV+wMMKxAmCx0bLgAKLbBOkjItMbbkR1vg==",
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.1.tgz",
+      "integrity": "sha512-v9GI1hpaqq1ZZR6pBD1+kI7O24PhDvNGNodjS3MdcEqyrahCp8zbtpv+2B/krUnSmUH80lbAS7MrdeK5IylgKg==",
       "dev": true,
       "requires": {
         "debug": "3.1.0"
@@ -1964,6 +2099,12 @@
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       }
     },
+    "foreach": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/foreach/-/foreach-2.0.5.tgz",
+      "integrity": "sha1-C+4AUBiusmDQo6865ljdATbsG5k=",
+      "dev": true
+    },
     "fragment-cache": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/fragment-cache/-/fragment-cache-0.2.1.tgz",
@@ -1980,7 +2121,7 @@
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       "requires": {
         "inherits": "2.0.3",
-        "readable-stream": "2.3.5"
+        "readable-stream": "2.3.6"
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@@ -1990,9 +2131,9 @@
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-          "version": "2.3.5",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.5.tgz",
-          "integrity": "sha512-tK0yDhrkygt/knjowCUiWP9YdV7c5R+8cR0r/kt9ZhBU906Fs6RpQJCEilamRJj1Nx2rWI6LkW9gKqjTkshhEw==",
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
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@@ -2000,14 +2141,14 @@
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             "safe-buffer": "5.1.1",
-            "string_decoder": "1.0.3",
+            "string_decoder": "1.1.1",
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-          "version": "1.0.3",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-          "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
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@@ -2033,6 +2174,12 @@
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+    "function-bind": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
+      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
+      "dev": true
+    },
     "functional-red-black-tree": {
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@@ -2333,24 +2480,24 @@
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+      "version": "1.6.1",
+      "resolved": "https://registry.npmjs.org/google-auth-library/-/google-auth-library-1.6.1.tgz",
+      "integrity": "sha512-jYiWC8NA9n9OtQM7ANn0Tk464do9yhKEtaJ72pKcaBiEwn4LwcGYIYOfwtfsSm3aur/ed3tlSxbmg24IAT6gAg==",
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         "axios": "0.18.0",
         "gcp-metadata": "0.6.3",
-        "gtoken": "2.2.0",
-        "jws": "3.1.4",
+        "gtoken": "2.3.0",
+        "jws": "3.1.5",
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-        "lru-cache": "4.1.2",
+        "lru-cache": "4.1.3",
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+          "version": "4.1.3",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.3.tgz",
+          "integrity": "sha512-fFEhvcgzuIoJVUF8fYr5KR0YqxD238zgObTps31YdADwPPAp82a4M8TrckkWyx7ekNlf9aBcVn81cFwwXngrJA==",
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@@ -2365,7 +2512,7 @@
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       "dev": true,
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-      "version": "1.1.8",
-      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.1.8.tgz",
-      "integrity": "sha512-e5t1NVhr5VWmD9V9U4KjjSGkf5w6CcTPgw11A3CfIvkkQxlAKzX3usPUp1NUQTmpOOjU+f9QRICU3tMbKwn9ZQ==",
+      "version": "1.1.9",
+      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.1.9.tgz",
+      "integrity": "sha512-DEqnSRTDw/Tc3FXf49zedI638Z9onwUotBMiUFKmrO2sdFKIbXamXGQ3Axd4qgphxKB4kw/qP1w5kTxnfU1B9Q==",
       "dev": true
     },
     "rx-lite": {
@@ -5191,6 +5390,15 @@
         "rx-lite": "4.0.8"
       }
     },
+    "rxjs": {
+      "version": "5.5.11",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-5.5.11.tgz",
+      "integrity": "sha512-3bjO7UwWfA2CV7lmwYMBzj4fQ6Cq+ftHc2MvUe+WMS7wcdJ1LosDWmdjPQanYp2dBRj572p7PeU81JUxHKOcBA==",
+      "dev": true,
+      "requires": {
+        "symbol-observable": "1.0.1"
+      }
+    },
     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
@@ -5237,9 +5445,9 @@
       }
     },
     "setprototypeof": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.0.3.tgz",
-      "integrity": "sha1-ZlZ+NwQ+608E2RvWWMDL77VbjgQ=",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
+      "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==",
       "dev": true
     },
     "shebang-command": {
@@ -5625,6 +5833,17 @@
         }
       }
     },
+    "string.prototype.padend": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/string.prototype.padend/-/string.prototype.padend-3.0.0.tgz",
+      "integrity": "sha1-86rvfBcZ8XDF6rHDK/eA2W4h8vA=",
+      "dev": true,
+      "requires": {
+        "define-properties": "1.1.2",
+        "es-abstract": "1.12.0",
+        "function-bind": "1.1.1"
+      }
+    },
     "string_decoder": {
       "version": "0.10.31",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
@@ -5665,6 +5884,12 @@
       "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
       "dev": true
     },
+    "symbol-observable": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.0.1.tgz",
+      "integrity": "sha1-g0D8RwLDEi310iKI+IKD9RPT/dQ=",
+      "dev": true
+    },
     "table": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/table/-/table-4.0.2.tgz",
@@ -5927,6 +6152,15 @@
       "integrity": "sha1-WIeWa7WCpFA6QetST301ARgVphM=",
       "dev": true
     },
+    "ts2gas": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/ts2gas/-/ts2gas-1.0.0.tgz",
+      "integrity": "sha512-NpxrsykcxumKTx7xavzYYUbL60PNzAoJjhMdl5LbsEgXIVfwGNftvMP4pcJt1C1Oyj41/lMJ1EPk5rhCicy0zg==",
+      "dev": true,
+      "requires": {
+        "typescript": "2.9.2"
+      }
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -5948,6 +6182,12 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
       "dev": true
     },
+    "typescript": {
+      "version": "2.9.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-2.9.2.tgz",
+      "integrity": "sha512-Gr4p6nFNaoufRIY4NMdpQRNmgxVIGMs4Fcu/ujdYk3nAZqk7supzBE9idmvfZIlH/Cuj//dvi+019qEue9lV0w==",
+      "dev": true
+    },
     "unc-path-regex": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
@@ -6184,20 +6424,12 @@
       "dev": true
     },
     "util": {
-      "version": "0.10.3",
-      "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
-      "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
+      "version": "0.10.4",
+      "resolved": "https://registry.npmjs.org/util/-/util-0.10.4.tgz",
+      "integrity": "sha512-0Pm9hTQ3se5ll1XihRic3FDIku70C+iHUdT/W926rSgHV5QgXsYbKZN8MSC3tJtSkhuROzvsQjAaFENRXr+19A==",
       "dev": true,
       "requires": {
-        "inherits": "2.0.1"
-      },
-      "dependencies": {
-        "inherits": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.1.tgz",
-          "integrity": "sha1-sX0I0ya0Qj5Wjv9xn5GwscvfafE=",
-          "dev": true
-        }
+        "inherits": "2.0.3"
       }
     },
     "util-deprecate": {
@@ -6213,9 +6445,9 @@
       "dev": true
     },
     "uuid": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.2.1.tgz",
-      "integrity": "sha512-jZnMwlb9Iku/O3smGWvZhauCf6cvvpKi4BKRiliS3cxnI+Gz9j5MEpTz2UFuXiKPJocb7gnsLHwiS05ige5BEA==",
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==",
       "dev": true
     },
     "v8flags": {
@@ -6304,6 +6536,16 @@
         }
       }
     },
+    "watch": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/watch/-/watch-1.0.2.tgz",
+      "integrity": "sha1-NApxe952Vyb6CqB9ch4BR6VR3ww=",
+      "dev": true,
+      "requires": {
+        "exec-sh": "0.2.2",
+        "minimist": "1.2.0"
+      }
+    },
     "which": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
diff --git a/package.json b/package.json
index b5757f07..112ae582 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   },
   "homepage": "https://github.com/googlesamples/apps-script-oauth2",
   "devDependencies": {
-    "@google/clasp": "^1.1.5",
+    "@google/clasp": "^1.5.0",
     "chai": "^4.1.2",
     "del": "^1.2.1",
     "eslint": "^4.17.0",
@@ -36,7 +36,7 @@
     "dist": "gulp dist",
     "lint": "gulp lint",
     "doc": "jsdoc -c jsdoc.json src/*.js README.md",
-    "push": "clasp push",
+    "push": "cd src; clasp push",
     "test": "mocha"
   }
 }
diff --git a/samples/Add-on/README.md b/samples/Add-on/README.md
index daa8cf0b..51fe7721 100644
--- a/samples/Add-on/README.md
+++ b/samples/Add-on/README.md
@@ -1,19 +1,19 @@
 # Sample Add-on
 
 This sample add-on for Google Sheets connects to your GitHub account using the
-Apps Script OAuth2 library and displays some information about the 
+Apps Script OAuth2 library and displays some information about the
 repositories you own. It demonstrates some best practices for using this
 library in an add-on environment.
 
 ## Intercom.js
 
 This add-on uses the [intercom.js library](https://github.com/diy/intercom.js/)
-to communicate between tabs / windows. Specifically, the callback page sends a 
-message to the sidebar letting it know when the authorization flow has 
-completed, so it can update it can start updating its contents.
+to communicate between tabs / windows. Specifically, the callback page sends a
+message to the sidebar letting it know when the authorization flow has
+completed, so it can start updating its contents.
 
 ## AngularJS
 
-This add-on uses the [AngularJS 1 framework](https://angularjs.org/) to make it 
-easier to update the sidebar dynamically. It's use is not required, and many 
+This add-on uses the [AngularJS 1 framework](https://angularjs.org/) to make it
+easier to update the sidebar dynamically. It's use is not required, and many
 other JavaScript frameworks would work just as well.
diff --git a/samples/WebApp/Callback.html b/samples/WebApp/Callback.html
new file mode 100644
index 00000000..af68c7da
--- /dev/null
+++ b/samples/WebApp/Callback.html
@@ -0,0 +1,50 @@
+<!--
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ -->
+
+<html>
+<head>
+  <base target="_top">
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/intercom.js/0.1.4/intercom.min.js"></script>
+</head>
+<body>
+  <h1><?= title ?></h1>
+  <? if (error) { ?>
+    <p> <span class="error-text">An error has occurred: <?= error ?>.</span></p>
+    <p>You may close this tab.</p>
+  <? } else if (isSignedIn) { ?>
+    <p> <span class="all-clear-text">Signed in!</span>
+      You may close this tab.</p>
+  <? } else { ?>
+    <p> <span class="error-text">Sign in failed.</span>
+      You may close this tab.</p>
+  <? } ?>
+
+  <script>
+    var email = '<?= email ?>';
+    var isSignedIn = '<?= isSignedIn ?>' === 'true';
+    var error = '<?= error ?>';
+
+    var intercom = Intercom.getInstance();
+    intercom.emit('oauthComplete', {
+      email: email,
+      isSignedIn: isSignedIn
+    });
+    if (window.top && !error) {
+      window.top.close();
+    }
+  </script>
+</body>
+</html>
diff --git a/samples/WebApp/Code.gs b/samples/WebApp/Code.gs
new file mode 100644
index 00000000..422894b7
--- /dev/null
+++ b/samples/WebApp/Code.gs
@@ -0,0 +1,147 @@
+/**
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * The GitHub OAuth2 client ID and secret. Uncomment and paste values from the
+ * GitHub developer settings.
+ */
+// var CLIENT_ID = '...';
+// var CLIENT_SECRET = '...';
+
+/**
+ * Handles GET requests. The page structure is described in the Page.html
+ * project file.
+ */
+function doGet() {
+  var service = getGitHubService();
+  var template = HtmlService.createTemplateFromFile('Page');
+  template.email = Session.getEffectiveUser().getEmail();
+  template.isSignedIn = service.hasAccess();
+  return template.evaluate()
+      .setTitle('Sample Web App')
+      .setSandboxMode(HtmlService.SandboxMode.IFRAME);
+}
+
+/**
+ * Builds and returns the authorization URL from the service object.
+ * @return {String} The authorization URL.
+ */
+function getAuthorizationUrl() {
+  return getGitHubService().getAuthorizationUrl();
+}
+
+/**
+ * Resets the API service, forcing re-authorization before
+ * additional authorization-required API calls can be made.
+ */
+function signOut() {
+  getGitHubService().reset();
+}
+
+/**
+ * Gets the user's GitHub profile.
+ */
+function getGitHubProfile() {
+  return getGitHubResource('user');
+}
+
+/**
+ * Gets the user's GitHub repos.
+ */
+function getGitHubRepos() {
+  return getGitHubResource('user/repos');
+}
+
+/**
+ * Fetches the specified resource from the GitHub API.
+ */
+function getGitHubResource(resource) {
+  var service = getGitHubService();
+  if (!service.hasAccess()) {
+    throw new Error('Error: Missing GitHub authorization.');
+  }
+  var url = 'https://api.github.com/' + resource;
+  var response = UrlFetchApp.fetch(url, {
+    headers: {
+      Authorization: 'Bearer ' + service.getAccessToken()
+    }
+  });
+  return JSON.parse(response.getContentText());
+}
+
+/**
+ * Gets an OAuth2 service configured for the GitHub API.
+ * @return {OAuth2.Service} The OAuth2 service
+ */
+function getGitHubService() {
+  return OAuth2.createService('github')
+      // Set the endpoint URLs.
+      .setAuthorizationBaseUrl('https://github.com/login/oauth/authorize')
+      .setTokenUrl('https://github.com/login/oauth/access_token')
+
+      // Set the client ID and secret.
+      .setClientId(CLIENT_ID)
+      .setClientSecret(CLIENT_SECRET)
+
+      // Set the name of the callback function that should be invoked to
+      // complete the OAuth flow.
+      .setCallbackFunction('authCallback')
+
+      // Set the property store where authorized tokens should be persisted.
+      .setPropertyStore(PropertiesService.getUserProperties());
+}
+
+/**
+ * Callback handler that is executed after an authorization attempt.
+ * @param {Object} request The results of API auth request.
+ */
+function authCallback(request) {
+  var template = HtmlService.createTemplateFromFile('Callback');
+  template.email = Session.getEffectiveUser().getEmail();
+  template.isSignedIn = false;
+  template.error = null;
+  var title;
+  try {
+    var service = getGitHubService();
+    var authorized = service.handleCallback(request);
+    template.isSignedIn = authorized;
+    title = authorized ? 'Access Granted' : 'Access Denied';
+  } catch (e) {
+    template.error = e;
+    title = 'Access Error';
+  }
+  template.title = title;
+  return template.evaluate()
+      .setTitle(title)
+      .setSandboxMode(HtmlService.SandboxMode.IFRAME);
+}
+
+/**
+ * Logs the redict URI to register in the Google Developers Console.
+ */
+function logRedirectUri() {
+  var service = getGitHubService();
+  Logger.log(service.getRedirectUri());
+}
+
+/**
+ * Includes the given project HTML file in the current HTML project file.
+ * Also used to include JavaScript.
+ * @param {String} filename Project file name.
+ */
+function include(filename) {
+  return HtmlService.createHtmlOutputFromFile(filename).getContent();
+}
diff --git a/samples/WebApp/JavaScript.html b/samples/WebApp/JavaScript.html
new file mode 100644
index 00000000..769067fb
--- /dev/null
+++ b/samples/WebApp/JavaScript.html
@@ -0,0 +1,114 @@
+<!--
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ -->
+<script>
+  /**
+   * Create a wrapped version of google.script.run that
+   * is adapted for Angular promises.
+   * @see https://docs.angularjs.org/api/ng/service/$q
+   */
+  var ScriptService = function($q) {
+    var self = this;
+    var promisify = function(key) {
+      return function() {
+        var args = arguments;
+        return $q(function(resolve, reject) {
+          // Call google.script.run with the specified method.
+          google.script.run
+            .withSuccessHandler(resolve)
+            .withFailureHandler(reject)
+            // Retrieve the method to run and then apply it to the arguments.
+            [key].apply(google.script.run, args);
+        });
+      };
+    };
+    // For each method exposed in google.script.run, wrap it up in a promise.
+    angular.forEach(google.script.run, function(_, key) {
+      self[key] = promisify(key)
+    });
+  };
+
+  /**
+   * The controller for the sample.
+   */
+  var SampleController = function($scope, $window, script, intercom) {
+    var self = this;
+
+    // Hold onto some dependencies.
+    self.$window = $window;
+    self.script = script;
+
+    // Initialize state.
+    self.email = $window.email;
+    self.isSignedIn = $window.isSignedIn;
+    self.user = null;
+    self.repos = null;
+
+    // Watch for changes to the user's sign in status, and fetch their GitHub
+    // data when they become signed in.
+    $scope.$watch('sample.isSignedIn', function(isSignedIn) {
+      if (isSignedIn) {
+        script.getGitHubProfile().then(function(user) {
+          self.user = user;
+        }, self.handleError);
+        script.getGitHubRepos().then(function(repos) {
+          self.repos = repos;
+        }, self.handleError);
+      } else {
+        self.user = null;
+        self.repos = null;
+      }
+    });
+
+    // Listen for the event that indicates that the OAuth flow has completed.
+    intercom.on('oauthComplete', function(data) {
+      // Make sure the event is for the same Google account.
+      if (data.email === self.email) {
+        $scope.$apply(function() {
+          self.isSignedIn = data.isSignedIn;
+        });
+      }
+    });
+  };
+
+  // Handler for the sign in button.
+  SampleController.prototype.signIn = function() {
+    var self = this;
+    self.script.getAuthorizationUrl().then(function(authorizationUrl) {
+      self.$window.open(authorizationUrl);
+    }, self.handleError);
+  };
+
+  // Handler for the sign out button.
+  SampleController.prototype.signOut = function() {
+    var self = this;
+    self.script.signOut().then(function() {
+      self.isSignedIn = false;
+    }, self.handleError);
+  };
+
+  // A generic handler for script errors.
+  SampleController.prototype.handleError = function(error) {
+    var self = this;
+    self.$window.alert(error);
+  };
+
+  var module = angular.module('sampleApp', [])
+    .service('script', ScriptService)
+    .service('intercom', function() {
+      return Intercom.getInstance();
+    })
+    .controller('SampleController', SampleController);
+</script>
diff --git a/samples/WebApp/Page.html b/samples/WebApp/Page.html
new file mode 100644
index 00000000..27d31127
--- /dev/null
+++ b/samples/WebApp/Page.html
@@ -0,0 +1,45 @@
+<!--
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ -->
+<!DOCTYPE html>
+<html ng-app="sampleApp">
+<head>
+  <base target="_top">
+  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.7/angular.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/intercom.js/0.1.4/intercom.min.js"></script>
+</head>
+<body ng-controller="SampleController as sample">
+  <div ng-show="!sample.isSignedIn">
+    <p>Please sign in to your GitHub account to continue.</p>
+    <button ng-click="sample.signIn()">Sign in</button>
+  </div>
+  <div ng-show="sample.isSignedIn">
+    <div>
+      <p>Hello {{sample.user.login || '...' }}</p>
+      <button ng-click="sample.signOut()">Sign out</button>
+    </div>
+    <p>Repos:</p>
+    <li ng-repeat="repo in sample.repos">
+      <a href="{{repo.html_url}}">{{repo.name}}</a> ({{repo.stargazers_count}} stars, {{repo.forks_count}} forks)
+    </li>
+  </div>
+
+  <script>
+    var email = '<?= email ?>';
+    var isSignedIn = '<?= isSignedIn ?>' === 'true';
+  </script>
+  <?!= include('JavaScript') ?>
+</body>
+</html>
diff --git a/samples/WebApp/README.md b/samples/WebApp/README.md
new file mode 100644
index 00000000..c6c54b78
--- /dev/null
+++ b/samples/WebApp/README.md
@@ -0,0 +1,48 @@
+# Sample Web App
+
+This sample web application connects to your GitHub account using the Apps
+Script OAuth2 library and displays some information about the repositories you
+own. It demonstrates some best practices for using this library in a web app.
+
+![Sample web app screenshot](screenshot.png)
+
+## Setup
+
+You can easily setup your own copy of this sample using the
+[`clasp`](https://github.com/google/clasp) command line tool. Install it and
+run `clasp login` before executing the commands below.
+
+1.  Run the following commands in this directory:
+    ```sh
+    clasp create "Sample Web App"
+    clasp push
+    clasp open
+    ```
+1.  In the opened script editor, run the function `logRedirectUri`. Open the
+    logs (**View > Logs**) and copy the URL shown.
+1.  Open the [GitHub Developer console](https://github.com/settings/developers)
+    and create a new OAuth App. Paste the URL you copied above into the field
+    **Authorization callback URL**.
+1.  Edit the file `Code.gs` and uncomment the lines defining the variables
+    `CLIENT_ID` and `CLIENT_SECRET`. Paste the corresponding values from the
+    GitHub developer console into those variables.
+1.  Run the following commands:
+    ```sh
+    clasp deploy
+    ```
+1.  Copy the deployment ID from the command line and insert it into the
+    following URL: `https://script.google.com/macros/s/<DEPLOYMENT_ID>/exec`.
+    Open that URL in your browser.
+
+## Intercom.js
+
+This web app uses the [intercom.js library](https://github.com/diy/intercom.js/)
+to communicate between tabs / windows. Specifically, the callback page sends a
+message to the web app letting it know when the authorization flow has
+completed, so it can start updating its contents.
+
+## Angular
+
+This web app uses the [Angular 1 framework](https://angularjs.org/) to make it
+easier to update the page dynamically. It's use is not required, and many
+other JavaScript frameworks would work just as well.
diff --git a/samples/WebApp/appsscript.json b/samples/WebApp/appsscript.json
new file mode 100644
index 00000000..bd1779b0
--- /dev/null
+++ b/samples/WebApp/appsscript.json
@@ -0,0 +1,16 @@
+{
+  "timeZone": "America/New_York",
+  "dependencies": {
+    "libraries": [{
+      "userSymbol": "OAuth2",
+      "libraryId": "1B7FSrk5Zi6L1rSxxTDgDEUsPzlukDsi4KGuTMorsTQHhGBzBkMun4iDF",
+      "version": "28",
+      "developmentMode": true
+    }]
+  },
+  "webapp": {
+    "access": "ANYONE",
+    "executeAs": "USER_ACCESSING"
+  },
+  "exceptionLogging": "STACKDRIVER"
+}
diff --git a/samples/WebApp/screenshot.png b/samples/WebApp/screenshot.png
new file mode 100644
index 00000000..031a0344
Binary files /dev/null and b/samples/WebApp/screenshot.png differ
diff --git a/.clasp.json b/src/.clasp.json
similarity index 69%
rename from .clasp.json
rename to src/.clasp.json
index 5d171b94..45db76bb 100644
--- a/.clasp.json
+++ b/src/.clasp.json
@@ -1,4 +1,3 @@
 {
-  "scriptId": "1B7FSrk5Zi6L1rSxxTDgDEUsPzlukDsi4KGuTMorsTQHhGBzBkMun4iDF",
-  "rootDir": "src"
+  "scriptId": "1B7FSrk5Zi6L1rSxxTDgDEUsPzlukDsi4KGuTMorsTQHhGBzBkMun4iDF"
 }