Flow-coverage added

.gitignore

@@ -1,3 +1,3 @@
 **/node_modules
 **/flow-typed
-
+**/flow-coverage

chapter02/package-lock.json

@@ -313,6 +313,16 @@
             "dev": true,
             "optional": true
         },
+        "array.prototype.find": {
+            "version": "2.0.4",
+            "resolved": "https://registry.npmjs.org/array.prototype.find/-/array.prototype.find-2.0.4.tgz",
+            "integrity": "sha1-VWpcU2LAhkgyPdrrnenRS8GGTJA=",
+            "dev": true,
+            "requires": {
+                "define-properties": "1.1.2",
+                "es-abstract": "1.11.0"
+            }
+        },
         "arrify": {
             "version": "1.0.1",
             "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
@@ -613,6 +623,12 @@
             "integrity": "sha1-TDqyCiryaqIM0lmVw5jE63AxDI0=",
             "dev": true
         },
+        "babel-plugin-syntax-object-rest-spread": {
+            "version": "6.13.0",
+            "resolved": "https://registry.npmjs.org/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz",
+            "integrity": "sha1-/WU28rzhODb/o6VFjEkDpZe7O/U=",
+            "dev": true
+        },
         "babel-plugin-syntax-trailing-function-commas": {
             "version": "6.22.0",
             "resolved": "https://registry.npmjs.org/babel-plugin-syntax-trailing-function-commas/-/babel-plugin-syntax-trailing-function-commas-6.22.0.tgz",
@@ -885,6 +901,16 @@
                 "babel-runtime": "6.26.0"
             }
         },
+        "babel-plugin-transform-object-rest-spread": {
+            "version": "6.26.0",
+            "resolved": "https://registry.npmjs.org/babel-plugin-transform-object-rest-spread/-/babel-plugin-transform-object-rest-spread-6.26.0.tgz",
+            "integrity": "sha1-DzZpLVD+9rfi1LOsFHgTepY7ewY=",
+            "dev": true,
+            "requires": {
+                "babel-plugin-syntax-object-rest-spread": "6.13.0",
+                "babel-runtime": "6.26.0"
+            }
+        },
         "babel-plugin-transform-regenerator": {
             "version": "6.26.0",
             "resolved": "https://registry.npmjs.org/babel-plugin-transform-regenerator/-/babel-plugin-transform-regenerator-6.26.0.tgz",
@@ -1043,6 +1069,17 @@
             "integrity": "sha512-q/UEjfGJ2Cm3oKV71DJz9d25TPnq5rhBVL2Q4fA5wcC3jcrdn7+SssEybFIxwAvvP+YCsCYNKughoF33GxgycQ==",
             "dev": true
         },
+        "badge-up": {
+            "version": "2.3.0",
+            "resolved": "https://registry.npmjs.org/badge-up/-/badge-up-2.3.0.tgz",
+            "integrity": "sha1-cv/2lKMtRKoUAx5yiJ4PxVtTBYs=",
+            "dev": true,
+            "requires": {
+                "css-color-names": "0.0.4",
+                "dot": "1.0.3",
+                "svgo": "0.4.5"
+            }
+        },
         "balanced-match": {
             "version": "1.0.0",
             "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -1287,6 +1324,15 @@
             "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
             "dev": true
         },
+        "coa": {
+            "version": "0.4.1",
+            "resolved": "https://registry.npmjs.org/coa/-/coa-0.4.1.tgz",
+            "integrity": "sha1-uvb0nHrZ8gxZevObP8HlCQ/og4s=",
+            "dev": true,
+            "requires": {
+                "q": "0.9.7"
+            }
+        },
         "code-point-at": {
             "version": "1.1.0",
             "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
@@ -1379,6 +1425,12 @@
             "integrity": "sha1-iNf/fsDfuG9xPch7u0LQRNPmxBs=",
             "dev": true
         },
+        "css-color-names": {
+            "version": "0.0.4",
+            "resolved": "https://registry.npmjs.org/css-color-names/-/css-color-names-0.0.4.tgz",
+            "integrity": "sha1-gIrcLnnPhHOAabZGyyDsJ762KeA=",
+            "dev": true
+        },
         "debug": {
             "version": "2.6.9",
             "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -1452,6 +1504,12 @@
                 "esutils": "2.0.2"
             }
         },
+        "dot": {
+            "version": "1.0.3",
+            "resolved": "https://registry.npmjs.org/dot/-/dot-1.0.3.tgz",
+            "integrity": "sha1-+HUL+2sDx2ZOsObLHrTGZBmvlCc=",
+            "dev": true
+        },
         "duplexer2": {
             "version": "0.1.4",
             "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.1.4.tgz",
@@ -1467,6 +1525,12 @@
             "integrity": "sha1-7gHdHKwO08vH/b6jfcCo8c4ALOI=",
             "dev": true
         },
+        "eastasianwidth": {
+            "version": "0.1.1",
+            "resolved": "https://registry.npmjs.org/eastasianwidth/-/eastasianwidth-0.1.1.tgz",
+            "integrity": "sha1-RNZW3p2kFWlEZzNTZfsxR7hXK3w=",
+            "dev": true
+        },
         "electron-to-chromium": {
             "version": "1.3.40",
             "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.40.tgz",
@@ -1808,6 +1872,21 @@
             "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
             "dev": true
         },
+        "execa": {
+            "version": "0.7.0",
+            "resolved": "https://registry.npmjs.org/execa/-/execa-0.7.0.tgz",
+            "integrity": "sha1-lEvs00zEHuMqY6n68nrVpl/Fl3c=",
+            "dev": true,
+            "requires": {
+                "cross-spawn": "5.1.0",
+                "get-stream": "3.0.0",
+                "is-stream": "1.1.0",
+                "npm-run-path": "2.0.2",
+                "p-finally": "1.0.0",
+                "signal-exit": "3.0.2",
+                "strip-eof": "1.0.0"
+            }
+        },
         "expand-brackets": {
             "version": "0.1.5",
             "resolved": "https://registry.npmjs.org/expand-brackets/-/expand-brackets-0.1.5.tgz",
@@ -1828,6 +1907,15 @@
                 "fill-range": "2.2.3"
             }
         },
+        "expand-tilde": {
+            "version": "1.2.2",
+            "resolved": "https://registry.npmjs.org/expand-tilde/-/expand-tilde-1.2.2.tgz",
+            "integrity": "sha1-C4HrqJflo9MdHD0QL48BRB5VlEk=",
+            "dev": true,
+            "requires": {
+                "os-homedir": "1.0.2"
+            }
+        },
         "external-editor": {
             "version": "2.1.0",
             "resolved": "https://registry.npmjs.org/external-editor/-/external-editor-2.1.0.tgz",
@@ -1939,6 +2027,25 @@
                 "repeat-string": "1.6.1"
             }
         },
+        "find-file-up": {
+            "version": "0.1.3",
+            "resolved": "https://registry.npmjs.org/find-file-up/-/find-file-up-0.1.3.tgz",
+            "integrity": "sha1-z2gJG8+fMApA2kEbN9pczlovvqA=",
+            "dev": true,
+            "requires": {
+                "fs-exists-sync": "0.1.0",
+                "resolve-dir": "0.1.1"
+            }
+        },
+        "find-pkg": {
+            "version": "0.1.2",
+            "resolved": "https://registry.npmjs.org/find-pkg/-/find-pkg-0.1.2.tgz",
+            "integrity": "sha1-G9wiwG42NlUy4qJIBGhUuXiNpVc=",
+            "dev": true,
+            "requires": {
+                "find-file-up": "0.1.3"
+            }
+        },
         "find-up": {
             "version": "1.1.2",
             "resolved": "https://registry.npmjs.org/find-up/-/find-up-1.1.2.tgz",
@@ -1961,12 +2068,147 @@
                 "write": "0.2.1"
             }
         },
+        "flow-annotation-check": {
+            "version": "1.8.0",
+            "resolved": "https://registry.npmjs.org/flow-annotation-check/-/flow-annotation-check-1.8.0.tgz",
+            "integrity": "sha512-sRyUm/vJZarMEXGnlk5CyAgCrLUs1Le1ljBpVs1TevCpxrTSCR0J1rCOJL0tQ3N8Ed59UGSV/KJ2Zc+jZz57YQ==",
+            "dev": true,
+            "requires": {
+                "argparse": "1.0.10",
+                "babel-plugin-transform-object-rest-spread": "6.26.0",
+                "glob": "7.1.1",
+                "load-pkg": "3.0.1"
+            },
+            "dependencies": {
+                "glob": {
+                    "version": "7.1.1",
+                    "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.1.tgz",
+                    "integrity": "sha1-gFIR3wT6rxxjo2ADBs31reULLsg=",
+                    "dev": true,
+                    "requires": {
+                        "fs.realpath": "1.0.0",
+                        "inflight": "1.0.6",
+                        "inherits": "2.0.3",
+                        "minimatch": "3.0.4",
+                        "once": "1.4.0",
+                        "path-is-absolute": "1.0.1"
+                    }
+                }
+            }
+        },
         "flow-bin": {
             "version": "0.68.0",
             "resolved": "https://registry.npmjs.org/flow-bin/-/flow-bin-0.68.0.tgz",
             "integrity": "sha1-hsLRSFfTBusuheJ08u6/VDVk9iM=",
             "dev": true
         },
+        "flow-coverage-report": {
+            "version": "0.5.0",
+            "resolved": "https://registry.npmjs.org/flow-coverage-report/-/flow-coverage-report-0.5.0.tgz",
+            "integrity": "sha1-rbzstb+aBo09ZviIGw17lsuCxfI=",
+            "dev": true,
+            "requires": {
+                "array.prototype.find": "2.0.4",
+                "babel-runtime": "6.23.0",
+                "badge-up": "2.3.0",
+                "flow-annotation-check": "1.8.0",
+                "glob": "7.1.1",
+                "minimatch": "3.0.4",
+                "mkdirp": "0.5.1",
+                "parse-json": "2.2.0",
+                "react": "15.5.4",
+                "react-dom": "15.5.4",
+                "strip-json-comments": "2.0.1",
+                "temp": "0.8.3",
+                "terminal-table": "0.0.12",
+                "yargs": "8.0.1"
+            },
+            "dependencies": {
+                "babel-runtime": {
+                    "version": "6.23.0",
+                    "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.23.0.tgz",
+                    "integrity": "sha1-CpSJ8UTecO+zzkMArM2zKeL8VDs=",
+                    "dev": true,
+                    "requires": {
+                        "core-js": "2.5.3",
+                        "regenerator-runtime": "0.10.5"
+                    }
+                },
+                "camelcase": {
+                    "version": "4.1.0",
+                    "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+                    "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
+                    "dev": true
+                },
+                "glob": {
+                    "version": "7.1.1",
+                    "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.1.tgz",
+                    "integrity": "sha1-gFIR3wT6rxxjo2ADBs31reULLsg=",
+                    "dev": true,
+                    "requires": {
+                        "fs.realpath": "1.0.0",
+                        "inflight": "1.0.6",
+                        "inherits": "2.0.3",
+                        "minimatch": "3.0.4",
+                        "once": "1.4.0",
+                        "path-is-absolute": "1.0.1"
+                    }
+                },
+                "os-locale": {
+                    "version": "2.1.0",
+                    "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-2.1.0.tgz",
+                    "integrity": "sha512-3sslG3zJbEYcaC4YVAvDorjGxc7tv6KVATnLPZONiljsUncvihe9BQoVCEs0RZ1kmf4Hk9OBqlZfJZWI4GanKA==",
+                    "dev": true,
+                    "requires": {
+                        "execa": "0.7.0",
+                        "lcid": "1.0.0",
+                        "mem": "1.1.0"
+                    }
+                },
+                "regenerator-runtime": {
+                    "version": "0.10.5",
+                    "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz",
+                    "integrity": "sha1-M2w+/BIgrc7dosn6tntaeVWjNlg=",
+                    "dev": true
+                },
+                "which-module": {
+                    "version": "2.0.0",
+                    "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+                    "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
+                    "dev": true
+                },
+                "yargs": {
+                    "version": "8.0.1",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-8.0.1.tgz",
+                    "integrity": "sha1-Qg73XoQMFFeoCtzKm8b6OEneUao=",
+                    "dev": true,
+                    "requires": {
+                        "camelcase": "4.1.0",
+                        "cliui": "3.2.0",
+                        "decamelize": "1.2.0",
+                        "get-caller-file": "1.0.2",
+                        "os-locale": "2.1.0",
+                        "read-pkg-up": "2.0.0",
+                        "require-directory": "2.1.1",
+                        "require-main-filename": "1.0.1",
+                        "set-blocking": "2.0.0",
+                        "string-width": "2.1.1",
+                        "which-module": "2.0.0",
+                        "y18n": "3.2.1",
+                        "yargs-parser": "7.0.0"
+                    }
+                },
+                "yargs-parser": {
+                    "version": "7.0.0",
+                    "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-7.0.0.tgz",
+                    "integrity": "sha1-jQrELxbqVd69MyyvTEA4s+P139k=",
+                    "dev": true,
+                    "requires": {
+                        "camelcase": "4.1.0"
+                    }
+                }
+            }
+        },
         "flow-remove-types": {
             "version": "1.2.3",
             "resolved": "https://registry.npmjs.org/flow-remove-types/-/flow-remove-types-1.2.3.tgz",
@@ -2041,6 +2283,12 @@
             "integrity": "sha1-C+4AUBiusmDQo6865ljdATbsG5k=",
             "dev": true
         },
+        "fs-exists-sync": {
+            "version": "0.1.0",
+            "resolved": "https://registry.npmjs.org/fs-exists-sync/-/fs-exists-sync-0.1.0.tgz",
+            "integrity": "sha1-mC1ok6+RjnLQjeyehnP/K1qNat0=",
+            "dev": true
+        },
         "fs-extra": {
             "version": "5.0.0",
             "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-5.0.0.tgz",
@@ -3047,6 +3295,28 @@
                 "is-glob": "2.0.1"
             }
         },
+        "global-modules": {
+            "version": "0.2.3",
+            "resolved": "https://registry.npmjs.org/global-modules/-/global-modules-0.2.3.tgz",
+            "integrity": "sha1-6lo77ULG1s6ZWk+KEmm12uIjgo0=",
+            "dev": true,
+            "requires": {
+                "global-prefix": "0.1.5",
+                "is-windows": "0.2.0"
+            }
+        },
+        "global-prefix": {
+            "version": "0.1.5",
+            "resolved": "https://registry.npmjs.org/global-prefix/-/global-prefix-0.1.5.tgz",
+            "integrity": "sha1-jTvGuNo8qBEqFg2NSW/wRiv+948=",
+            "dev": true,
+            "requires": {
+                "homedir-polyfill": "1.0.1",
+                "ini": "1.3.5",
+                "is-windows": "0.2.0",
+                "which": "1.3.0"
+            }
+        },
         "globals": {
             "version": "9.18.0",
             "resolved": "https://registry.npmjs.org/globals/-/globals-9.18.0.tgz",
@@ -3144,6 +3414,15 @@
                 "os-tmpdir": "1.0.2"
             }
         },
+        "homedir-polyfill": {
+            "version": "1.0.1",
+            "resolved": "https://registry.npmjs.org/homedir-polyfill/-/homedir-polyfill-1.0.1.tgz",
+            "integrity": "sha1-TCu8inWJmP7r9e1oWA921GdotLw=",
+            "dev": true,
+            "requires": {
+                "parse-passwd": "1.0.0"
+            }
+        },
         "hosted-git-info": {
             "version": "2.6.0",
             "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.6.0.tgz",
@@ -3183,6 +3462,12 @@
             "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
             "dev": true
         },
+        "ini": {
+            "version": "1.3.5",
+            "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.5.tgz",
+            "integrity": "sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==",
+            "dev": true
+        },
         "inquirer": {
             "version": "3.3.0",
             "resolved": "https://registry.npmjs.org/inquirer/-/inquirer-3.3.0.tgz",
@@ -3467,6 +3752,12 @@
             "integrity": "sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=",
             "dev": true
         },
+        "is-windows": {
+            "version": "0.2.0",
+            "resolved": "https://registry.npmjs.org/is-windows/-/is-windows-0.2.0.tgz",
+            "integrity": "sha1-3hqm1j6indJIc3tp8f+LgALSEIw=",
+            "dev": true
+        },
         "isarray": {
             "version": "1.0.0",
             "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
@@ -3613,6 +3904,15 @@
                 "strip-bom": "3.0.0"
             }
         },
+        "load-pkg": {
+            "version": "3.0.1",
+            "resolved": "https://registry.npmjs.org/load-pkg/-/load-pkg-3.0.1.tgz",
+            "integrity": "sha1-kjCzfsBOVpADBgvFiVHj7VCNWU8=",
+            "dev": true,
+            "requires": {
+                "find-pkg": "0.1.2"
+            }
+        },
         "locate-path": {
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-2.0.0.tgz",
@@ -3679,6 +3979,15 @@
                 "is-buffer": "1.1.6"
             }
         },
+        "mem": {
+            "version": "1.1.0",
+            "resolved": "https://registry.npmjs.org/mem/-/mem-1.1.0.tgz",
+            "integrity": "sha1-Xt1StIXKHZAP5kiVUFOZoN+kX3Y=",
+            "dev": true,
+            "requires": {
+                "mimic-fn": "1.2.0"
+            }
+        },
         "micromatch": {
             "version": "2.3.11",
             "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-2.3.11.tgz",
@@ -3803,6 +4112,15 @@
                 "remove-trailing-separator": "1.1.0"
             }
         },
+        "npm-run-path": {
+            "version": "2.0.2",
+            "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-2.0.2.tgz",
+            "integrity": "sha1-NakjLfo11wZ7TLLd8jV7GHFTbF8=",
+            "dev": true,
+            "requires": {
+                "path-key": "2.0.1"
+            }
+        },
         "number-is-nan": {
             "version": "1.0.1",
             "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
@@ -3963,6 +4281,12 @@
                 "error-ex": "1.3.1"
             }
         },
+        "parse-passwd": {
+            "version": "1.0.0",
+            "resolved": "https://registry.npmjs.org/parse-passwd/-/parse-passwd-1.0.0.tgz",
+            "integrity": "sha1-bVuTSkVpk7I9N/QKOC1vFmao5cY=",
+            "dev": true
+        },
         "path-exists": {
             "version": "2.1.0",
             "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-2.1.0.tgz",
@@ -3984,6 +4308,12 @@
             "integrity": "sha1-NlQX3t5EQw0cEa9hAn+s8HS9/FM=",
             "dev": true
         },
+        "path-key": {
+            "version": "2.0.1",
+            "resolved": "https://registry.npmjs.org/path-key/-/path-key-2.0.1.tgz",
+            "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=",
+            "dev": true
+        },
         "path-parse": {
             "version": "1.0.5",
             "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.5.tgz",
@@ -4109,6 +4439,12 @@
             "resolved": "https://registry.npmjs.org/psl/-/psl-1.1.25.tgz",
             "integrity": "sha512-Djug/g0La/23cfyh1GujTbrLs/dhUxEquv78at1zHs03oglR1FP54v1nr8J7nCKxLEs1tsNP0u3DGVrugGi/kA=="
         },
+        "q": {
+            "version": "0.9.7",
+            "resolved": "https://registry.npmjs.org/q/-/q-0.9.7.tgz",
+            "integrity": "sha1-TeLmyzspCIyeTLwDv51C+5bOL3U=",
+            "dev": true
+        },
         "randomatic": {
             "version": "1.1.7",
             "resolved": "https://registry.npmjs.org/randomatic/-/randomatic-1.1.7.tgz",
@@ -4154,6 +4490,42 @@
                 }
             }
         },
+        "react": {
+            "version": "15.5.4",
+            "resolved": "https://registry.npmjs.org/react/-/react-15.5.4.tgz",
+            "integrity": "sha1-+oPrAVBqsjfNwcjDsc6o3gEr8Ec=",
+            "dev": true,
+            "requires": {
+                "fbjs": "0.8.16",
+                "loose-envify": "1.3.1",
+                "object-assign": "4.1.1",
+                "prop-types": "15.6.1"
+            }
+        },
+        "react-dom": {
+            "version": "15.5.4",
+            "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-15.5.4.tgz",
+            "integrity": "sha1-ugwoeG/VLtfk8hNf4CiNRirvk9o=",
+            "dev": true,
+            "requires": {
+                "fbjs": "0.8.16",
+                "loose-envify": "1.3.1",
+                "object-assign": "4.1.1",
+                "prop-types": "15.5.10"
+            },
+            "dependencies": {
+                "prop-types": {
+                    "version": "15.5.10",
+                    "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.5.10.tgz",
+                    "integrity": "sha1-J5ffwxJhguOpXj37suiT3ddFYVQ=",
+                    "dev": true,
+                    "requires": {
+                        "fbjs": "0.8.16",
+                        "loose-envify": "1.3.1"
+                    }
+                }
+            }
+        },
         "read-pkg": {
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-2.0.0.tgz",
@@ -4346,6 +4718,16 @@
                 "path-parse": "1.0.5"
             }
         },
+        "resolve-dir": {
+            "version": "0.1.1",
+            "resolved": "https://registry.npmjs.org/resolve-dir/-/resolve-dir-0.1.1.tgz",
+            "integrity": "sha1-shklmlYC+sXFxJatiUpujMQwJh4=",
+            "dev": true,
+            "requires": {
+                "expand-tilde": "1.2.2",
+                "global-modules": "0.2.3"
+            }
+        },
         "resolve-from": {
             "version": "1.0.1",
             "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-1.0.1.tgz",
@@ -4401,6 +4783,12 @@
             "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
             "dev": true
         },
+        "sax": {
+            "version": "0.6.1",
+            "resolved": "https://registry.npmjs.org/sax/-/sax-0.6.1.tgz",
+            "integrity": "sha1-VjsZx8HeiS4Jv8Ty/DDjwn8JUrk=",
+            "dev": true
+        },
         "semver": {
             "version": "5.5.0",
             "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
@@ -4566,6 +4954,12 @@
             "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=",
             "dev": true
         },
+        "strip-eof": {
+            "version": "1.0.0",
+            "resolved": "https://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
+            "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=",
+            "dev": true
+        },
         "strip-json-comments": {
             "version": "2.0.1",
             "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
@@ -4578,6 +4972,53 @@
             "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
             "dev": true
         },
+        "svgo": {
+            "version": "0.4.5",
+            "resolved": "https://registry.npmjs.org/svgo/-/svgo-0.4.5.tgz",
+            "integrity": "sha1-ulYVX7FzNyiVbAG0BSIe5+eJoqQ=",
+            "dev": true,
+            "requires": {
+                "coa": "0.4.1",
+                "colors": "0.6.2",
+                "js-yaml": "2.1.3",
+                "sax": "0.6.1",
+                "whet.extend": "0.9.9"
+            },
+            "dependencies": {
+                "argparse": {
+                    "version": "0.1.16",
+                    "resolved": "https://registry.npmjs.org/argparse/-/argparse-0.1.16.tgz",
+                    "integrity": "sha1-z9AeD7uj1srtBJ+9dY1A9lGW9Xw=",
+                    "dev": true,
+                    "requires": {
+                        "underscore": "1.7.0",
+                        "underscore.string": "2.4.0"
+                    }
+                },
+                "colors": {
+                    "version": "0.6.2",
+                    "resolved": "https://registry.npmjs.org/colors/-/colors-0.6.2.tgz",
+                    "integrity": "sha1-JCP+ZnisDF2uiFLl0OW+CMmXq8w=",
+                    "dev": true
+                },
+                "esprima": {
+                    "version": "1.0.4",
+                    "resolved": "https://registry.npmjs.org/esprima/-/esprima-1.0.4.tgz",
+                    "integrity": "sha1-n1V+CPw7TSbs6d00+Pv0drYlha0=",
+                    "dev": true
+                },
+                "js-yaml": {
+                    "version": "2.1.3",
+                    "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-2.1.3.tgz",
+                    "integrity": "sha1-D/tWF75VUlh4Bj16Fq7n/dKC6Ew=",
+                    "dev": true,
+                    "requires": {
+                        "argparse": "0.1.16",
+                        "esprima": "1.0.4"
+                    }
+                }
+            }
+        },
         "table": {
             "version": "4.0.2",
             "resolved": "https://registry.npmjs.org/table/-/table-4.0.2.tgz",
@@ -4623,6 +5064,34 @@
                 }
             }
         },
+        "temp": {
+            "version": "0.8.3",
+            "resolved": "https://registry.npmjs.org/temp/-/temp-0.8.3.tgz",
+            "integrity": "sha1-4Ma8TSa5AxJEEOT+2BEDAU38H1k=",
+            "dev": true,
+            "requires": {
+                "os-tmpdir": "1.0.2",
+                "rimraf": "2.2.8"
+            },
+            "dependencies": {
+                "rimraf": {
+                    "version": "2.2.8",
+                    "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+                    "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI=",
+                    "dev": true
+                }
+            }
+        },
+        "terminal-table": {
+            "version": "0.0.12",
+            "resolved": "https://registry.npmjs.org/terminal-table/-/terminal-table-0.0.12.tgz",
+            "integrity": "sha1-e1bQCapoKN/dEPEbZU55wGKWX6I=",
+            "dev": true,
+            "requires": {
+                "colors": "1.2.1",
+                "eastasianwidth": "0.1.1"
+            }
+        },
         "text-table": {
             "version": "0.2.0",
             "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
@@ -4689,6 +5158,18 @@
             "integrity": "sha512-uRdSdu1oA1rncCQL7sCj8vSyZkgtL7faaw9Tc9rZ3mGgraQ7+Pdx7w5mnOSF3gw9ZNG6oc+KXfkon3bKuROm0g==",
             "dev": true
         },
+        "underscore": {
+            "version": "1.7.0",
+            "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
+            "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
+            "dev": true
+        },
+        "underscore.string": {
+            "version": "2.4.0",
+            "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-2.4.0.tgz",
+            "integrity": "sha1-jN2PusTi0uoefi6Al8QvRCKA+Fs=",
+            "dev": true
+        },
         "universalify": {
             "version": "0.1.1",
             "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.1.tgz",
@@ -4799,6 +5280,12 @@
             "integrity": "sha1-nITsLc9oGH/wC8ZOEnS0QhduHIQ=",
             "dev": true
         },
+        "whet.extend": {
+            "version": "0.9.9",
+            "resolved": "https://registry.npmjs.org/whet.extend/-/whet.extend-0.9.9.tgz",
+            "integrity": "sha1-+HfVv2SMl+WqVC+twW1qJZucEaE=",
+            "dev": true
+        },
         "which": {
             "version": "1.3.0",
             "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",

chapter02/package.json

@@ -9,6 +9,7 @@
         "addTypes": "flow-typed install",
         "update": "npm install && flow-typed install",
         "flow": "flow",
+        "flow-coverage": "flow-coverage-report",
         "eslint": "eslint src",
         "test": "echo \"Error: no test specified\" && exit 1"
     },
@@ -36,6 +37,14 @@
             "prefer-const": "error"
         }
     },
+    "flow-coverage-report": {
+        "concurrentFiles": 1,
+        "excludeGlob": ["node_modules/**"],
+        "includeGlob": ["src/**/*.js"],
+        "threshold": 90,
+        "type": ["text", "html", "json"]
+    },
+
     "prettier": {
         "tabWidth": 4,
         "printWidth": 75
@@ -54,6 +63,7 @@
         "eslint-config-recommended": "^2.0.0",
         "eslint-plugin-flowtype": "^2.46.1",
         "flow-bin": "^0.68.0",
+        "flow-coverage-report": "^0.5.0",
         "flow-remove-types": "^1.2.3",
         "flow-typed": "^2.4.0",
         "prettier": "^1.11.1"