Merge pull request #84 from nfuller/add-yargs

Add yargs for flags, and several follow-up commits for new flags

5 files changed, 736 insertions, 438 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4812a8c..9c835ba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## Pending
+
+### Other Changes
+
+* Switch command line flag processing to use the yargs library. Existing flags have changed: --no-validation and --filtered-zones have been renamed to --no_validation and --included_zones respectively. --included_zones now takes a list without quotes or commas.
+* Addition of new flags: --excluded_zones, --dist_dir, --downloads_dir, --skip_zip, --skip_shapefile. See --help and README.md for details.
+
 ## 2020a
 
 ### Zone Changes
diff --git a/README.md b/README.md
index e36f1af..b582024 100644
--- a/README.md
+++ b/README.md
@@ -51,12 +51,38 @@ node --max-old-space-size=8192 index.js
 **Run the script to generate timezones for only specified timezones.**
 
 ```shell
-node --max-old-space-size=8192 index.js --filtered-zones "America/New_York,America/Chicago"
+node --max-old-space-size=8192 index.js --included_zones America/New_York America/Chicago
 ```
 
+**Run the script to generate timezones while excluding specified timezones.**
+
+```shell
+node --max-old-space-size=8192 index.js --excluded_zones America/New_York America/Chicago
+```
+
+**Run the script with custom working / output directories.**
+
+timezone-boundary-builder downloads boundaries from OpenStreetMap and places them in the `./downloads` directory by default. It generates output files in the `./dist` directory by default.
+
+If you want to use different directories, you can do so with the `--downloads_dir` and `--dist_dir` flags.
+
+```shell
+node --max-old-space-size=8192 index.js --downloads_dir ./downloads2 --dist_dir ./dist2
+```
+
+**Other command line flags**
+
+Other command line flags:
+
+  + `--help` - show some basic usage information
+  + `--no_validation` - do not validate the time zone boundaries
+  + `--skip_zip` - do not zip the generated geojson files
+  + `--skip_shapefile` - do not create the shapefile from the geojson file
+
+
 ### What the script does
 
-There are three config files that describe the boundary building process.  The `osmBoundarySources.json` file lists all of the needed boundaries to extract via queries to the Overpass API.  The `timezones.json` file lists all of the timezones and various operations to perform to build the boundaries.  The `expectedZoneOverlaps.json` file lists all timezones that are allowed to overlap each other and the acceptable bounds of a particular overlap.  
+There are three config files that describe the boundary building process.  The `osmBoundarySources.json` file lists all of the needed boundaries to extract via queries to the Overpass API.  The `timezones.json` file lists all of the timezones and various operations to perform to build the boundaries.  The `expectedZoneOverlaps.json` file lists all timezones that are allowed to overlap each other and the acceptable bounds of a particular overlap.
 
 The `index.js` file downloads all of the required geometries, builds the specified geometries, validates that there aren't large areas of overlap (other than those that are expected), outputs one huge geojson file, and finally zips up the geojson file using the `zip` cli and also converts the geojson to a shapefile using the `ogr2ogr` cli.  The script has only been verified to run with Node.js 10 on the MacOS platform.
 
diff --git a/index.js b/index.js
index 56e8c02..75bd6bd 100644
--- a/index.js
+++ b/index.js
@@ -11,6 +11,8 @@ var asynclib = require('async')
 var jsts = require('jsts')
 var rimraf = require('rimraf')
 var overpass = require('query-overpass')
+var yargs = require('yargs')
+var path = require('path')
 
 const ProgressStats = require('./progressStats')
 
@@ -18,16 +20,68 @@ var osmBoundarySources = require('./osmBoundarySources.json')
 var zoneCfg = require('./timezones.json')
 var expectedZoneOverlaps = require('./expectedZoneOverlaps.json')
 
-// allow building of only a specified zones
-var filteredIndex = process.argv.indexOf('--filtered-zones')
-let filteredZones = []
-if (filteredIndex > -1 && process.argv[filteredIndex + 1]) {
-  filteredZones = process.argv[filteredIndex + 1].split(',')
-  var newZoneCfg = {}
-  filteredZones.forEach((zoneName) => {
-    newZoneCfg[zoneName] = zoneCfg[zoneName]
+const argv = yargs
+  .option('included_zones', {
+    description: 'Include specified zones',
+    type: 'array'
+  })
+  .option('excluded_zones', {
+    description: 'Exclude specified zones',
+    type: 'array'
+  })
+  .option('downloads_dir', {
+    description: 'Set the download location',
+    default: './downloads',
+    type: 'string'
+  })
+  .option('dist_dir', {
+    description: 'Set the dist location',
+    default: './dist',
+    type: 'string'
+  })
+  .option('no_validation', {
+    description: 'Skip validation',
+    type: 'boolean'
+  })
+  .option('skip_zip', {
+    description: 'Skip zip creation',
+    type: 'boolean'
   })
-  zoneCfg = newZoneCfg
+  .option('skip_shapefile', {
+    description: 'Skip shapefile creation',
+    type: 'boolean'
+  })
+  .help()
+  .strict()
+  .alias('help', 'h')
+  .argv
+
+// Resolve the arguments with paths so relative paths become absolute.
+let downloadsDir = path.resolve(argv.downloads_dir)
+let distDir = path.resolve(argv.dist_dir)
+
+// allow building of only a specified zones
+let includedZones = []
+let excludedZones = []
+if (argv.included_zones || argv.excluded_zones) {
+  if (argv.included_zones) {
+    let newZoneCfg = {}
+    includedZones = argv.included_zones
+    includedZones.forEach((zoneName) => {
+      newZoneCfg[zoneName] = zoneCfg[zoneName]
+    })
+    zoneCfg = newZoneCfg
+  }
+  if (argv.excluded_zones) {
+    let newZoneCfg = {}
+    excludedZones = argv.excluded_zones
+    Object.keys(zoneCfg).forEach((zoneName) => {
+      if (!excludedZones.includes(zoneName)) {
+        newZoneCfg[zoneName] = zoneCfg[zoneName]
+      }
+    })
+    zoneCfg = newZoneCfg
+  }
 
   // filter out unneccessary downloads
   var newOsmBoundarySources = {}
@@ -153,7 +207,7 @@ var downloadOsmBoundary = function (boundaryId, boundaryCallback) {
   } else {
     query += 'relation'
   }
-  var boundaryFilename = './downloads/' + boundaryId + '.json'
+  var boundaryFilename = downloadsDir + '/' + boundaryId + '.json'
   var debug = 'getting data for ' + boundaryId
   var queryKeys = Object.keys(cfg)
 
@@ -261,7 +315,7 @@ var downloadOsmBoundary = function (boundaryId, boundaryCallback) {
 }
 
 var getTzDistFilename = function (tzid) {
-  return './dist/' + tzid.replace(/\//g, '__') + '.json'
+  return distDir + '/' + tzid.replace(/\//g, '__') + '.json'
 }
 
 /**
@@ -276,7 +330,7 @@ var getTzDistFilename = function (tzid) {
 var getDataSource = function (source) {
   var geoJson
   if (source.source === 'overpass') {
-    geoJson = require('./downloads/' + source.id + '.json')
+    geoJson = require(downloadsDir + '/' + source.id + '.json')
   } else if (source.source === 'manual-polygon') {
     geoJson = polygon(source.data).geometry
   } else if (source.source === 'manual-multipolygon') {
@@ -573,8 +627,11 @@ let oceanZones = [
   { tzid: 'Etc/GMT+12', left: -180, right: -172.5 }
 ]
 
-if (filteredZones.length > 0) {
-  oceanZones = oceanZones.filter(oceanZone => filteredZones.indexOf(oceanZone) > -1)
+if (includedZones.length > 0) {
+  oceanZones = oceanZones.filter(oceanZone => includedZones.indexOf(oceanZone) > -1)
+}
+if (excludedZones.length > 0) {
+  oceanZones = oceanZones.filter(oceanZone => excludedZones.indexOf(oceanZone) === -1)
 }
 
 var addOceans = function (callback) {
@@ -613,8 +670,8 @@ var addOceans = function (callback) {
 }
 
 var combineAndWriteZones = function (callback) {
-  var stream = fs.createWriteStream('./dist/combined.json')
-  var streamWithOceans = fs.createWriteStream('./dist/combined-with-oceans.json')
+  var stream = fs.createWriteStream(distDir + '/combined.json')
+  var streamWithOceans = fs.createWriteStream(distDir + '/combined-with-oceans.json')
   var zones = Object.keys(zoneCfg)
 
   stream.write('{"type":"FeatureCollection","features":[')
@@ -656,11 +713,11 @@ var combineAndWriteZones = function (callback) {
 const autoScript = {
   makeDownloadsDir: function (cb) {
     overallProgress.beginTask('Creating downloads dir')
-    safeMkdir('./downloads', cb)
+    safeMkdir(downloadsDir, cb)
   },
   makeDistDir: function (cb) {
     overallProgress.beginTask('Creating dist dir')
-    safeMkdir('./dist', cb)
+    safeMkdir(distDir, cb)
   },
   getOsmBoundaries: ['makeDownloadsDir', function (results, cb) {
     overallProgress.beginTask('Downloading osm boundaries')
@@ -668,7 +725,8 @@ const autoScript = {
   }],
   zipInputData: ['makeDistDir', 'getOsmBoundaries', function (results, cb) {
     overallProgress.beginTask('Zipping up input data')
-    exec('zip dist/input-data.zip downloads/* timezones.json osmBoundarySources.json expectedZoneOverlaps.json', cb)
+    exec('zip ' + distDir + '/input-data.zip ' + downloadsDir +
+         '/* timezones.json osmBoundarySources.json expectedZoneOverlaps.json', cb)
   }],
   createZones: ['makeDistDir', 'getOsmBoundaries', function (results, cb) {
     overallProgress.beginTask('Creating timezone boundaries')
@@ -677,7 +735,7 @@ const autoScript = {
   validateZones: ['createZones', function (results, cb) {
     overallProgress.beginTask('Validating timezone boundaries')
     loadDistZonesIntoMemory()
-    if (process.argv.indexOf('no-validation') > -1) {
+    if (argv.no_validation) {
       console.warn('WARNING: Skipping validation!')
       cb()
     } else {
@@ -693,32 +751,60 @@ const autoScript = {
     combineAndWriteZones(cb)
   }],
   zipGeoJson: ['mergeZones', function (results, cb) {
+    if (argv.skip_zip) {
+      overallProgress.beginTask('Skipping zip')
+      return cb()
+    }
     overallProgress.beginTask('Zipping geojson')
-    exec('zip dist/timezones.geojson.zip dist/combined.json', cb)
+    let zipFile = distDir + '/timezones.geojson.zip'
+    let jsonFile = distDir + '/combined.json'
+    exec('zip ' + zipFile + ' ' + jsonFile, cb)
   }],
   zipGeoJsonWithOceans: ['mergeZones', function (results, cb) {
+    if (argv.skip_zip) {
+      overallProgress.beginTask('Skipping with oceans zip')
+      return cb()
+    }
     overallProgress.beginTask('Zipping geojson with oceans')
-    exec('zip dist/timezones-with-oceans.geojson.zip dist/combined-with-oceans.json', cb)
+    let zipFile = distDir + '/timezones-with-oceans.geojson.zip'
+    let jsonFile = distDir + '/combined-with-oceans.json'
+    exec('zip ' + zipFile + ' ' + jsonFile, cb)
   }],
   makeShapefile: ['mergeZones', function (results, cb) {
+    if (argv.skip_shapefile) {
+      overallProgress.beginTask('Skipping shapefile creation')
+      return cb()
+    }
     overallProgress.beginTask('Converting from geojson to shapefile')
-    rimraf.sync('dist/combined-shapefile.*')
+    let shapeFileGlob = distDir + '/combined-shapefile.*'
+    rimraf.sync(shapeFileGlob)
+    let shapeFile = distDir + '/combined-shapefile.shp'
+    let jsonFile = distDir + '/combined.json'
     exec(
-      'ogr2ogr -f "ESRI Shapefile" dist/combined-shapefile.shp dist/combined.json',
+      'ogr2ogr -f "ESRI Shapefile" ' + shapeFile + ' ' + jsonFile,
       function (err, stdout, stderr) {
         if (err) { return cb(err) }
-        exec('zip dist/timezones.shapefile.zip dist/combined-shapefile.*', cb)
+        let shapeFileZip = distDir + '/timezones.shapefile.zip'
+        exec('zip ' + shapeFileZip + ' ' + shapeFileGlob, cb)
       }
     )
   }],
   makeShapefileWithOceans: ['mergeZones', function (results, cb) {
+    if (argv.skip_shapefile) {
+      overallProgress.beginTask('Skipping with oceans shapefile creation')
+      return cb()
+    }
     overallProgress.beginTask('Converting from geojson with oceans to shapefile')
-    rimraf.sync('dist/combined-shapefile-with-oceans.*')
+    let shapeFileGlob = distDir + '/combined-shapefile-with-oceans.*'
+    rimraf.sync(shapeFileGlob)
+    let shapeFile = distDir + '/combined-shapefile-with-oceans.shp'
+    let jsonFile = distDir + '/combined-with-oceans.json'
     exec(
-      'ogr2ogr -f "ESRI Shapefile" dist/combined-shapefile-with-oceans.shp dist/combined-with-oceans.json',
+      'ogr2ogr -f "ESRI Shapefile" ' + shapeFile + ' ' + jsonFile,
       function (err, stdout, stderr) {
         if (err) { return cb(err) }
-        exec('zip dist/timezones-with-oceans.shapefile.zip dist/combined-shapefile-with-oceans.*', cb)
+        let shapeFileZip = distDir + '/timezones-with-oceans.shapefile.zip'
+        exec('zip ' + shapeFileZip + ' ' + shapeFileGlob, cb)
       }
     )
   }],
@@ -728,11 +814,14 @@ const autoScript = {
     oceanZones.forEach(oceanZone => {
       zoneNames.push(oceanZone.tzid)
     })
-    if (filteredZones.length > 0) {
-      zoneNames = zoneNames.filter(zoneName => filteredZones.indexOf(zoneName) > -1)
+    if (includedZones.length > 0) {
+      zoneNames = zoneNames.filter(zoneName => includedZones.indexOf(zoneName) > -1)
+    }
+    if (excludedZones.length > 0) {
+      zoneNames = zoneNames.filter(zoneName => excludedZones.indexOf(zoneName) === -1)
     }
     fs.writeFile(
-      'dist/timezone-names.json',
+      distDir + '/timezone-names.json',
       JSON.stringify(zoneNames),
       cb
     )
diff --git a/package-lock.json b/package-lock.json
index 018b6b2..871d1f8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,11 +17,11 @@
       "resolved": "https://registry.npmjs.org/@mapbox/geojsonhint/-/geojsonhint-3.0.0.tgz",
       "integrity": "sha512-zHcyh1rDHYnEBd6NvOWoeHLuvazlDkIjvz9MJx4cKwcKTlfrqgxVnTv1QLnVJnsSU5neJnhQJcgscR/Zl4uYgw==",
       "requires": {
-        "concat-stream": "1.6.2",
+        "concat-stream": "^1.6.1",
         "jsonlint-lines": "1.7.1",
         "minimist": "1.2.0",
-        "vfile": "4.0.1",
-        "vfile-reporter": "5.1.2"
+        "vfile": "^4.0.0",
+        "vfile-reporter": "^5.1.1"
       }
     },
     "@turf/bbox": {
@@ -29,8 +29,8 @@
       "resolved": "https://registry.npmjs.org/@turf/bbox/-/bbox-6.0.1.tgz",
       "integrity": "sha512-EGgaRLettBG25Iyx7VyUINsPpVj1x3nFQFiGS3ER8KCI1MximzNLsam3eXRabqQDjyAKyAE1bJ4EZEpGvspQxw==",
       "requires": {
-        "@turf/helpers": "6.1.4",
-        "@turf/meta": "6.0.2"
+        "@turf/helpers": "6.x",
+        "@turf/meta": "6.x"
       }
     },
     "@turf/helpers": {
@@ -43,7 +43,7 @@
       "resolved": "https://registry.npmjs.org/@turf/meta/-/meta-6.0.2.tgz",
       "integrity": "sha512-VA7HJkx7qF1l3+GNGkDVn2oXy4+QoLP6LktXAaZKjuT1JI0YESat7quUkbCMy4zP9lAUuvS4YMslLyTtr919FA==",
       "requires": {
-        "@turf/helpers": "6.1.4"
+        "@turf/helpers": "6.x"
       }
     },
     "JSONStream": {
@@ -51,8 +51,8 @@
       "resolved": "https://registry.npmjs.org/JSONStream/-/JSONStream-1.3.5.tgz",
       "integrity": "sha512-E+iruNOY8VV9s4JEbe1aNEm6MiszPRr/UfcHMz0TQh1BXSxHK+ASV1R6W4HpjBhSeS+54PIsAMCBmwD06LLsqQ==",
       "requires": {
-        "jsonparse": "1.3.1",
-        "through": "2.3.8"
+        "jsonparse": "^1.2.0",
+        "through": ">=2.2.7 <3"
       }
     },
     "JSV": {
@@ -77,10 +77,10 @@
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.6.2.tgz",
       "integrity": "sha512-FBHEW6Jf5TB9MGBgUUA9XHkTbjXYfAUjY43ACMfmdMRHniyoMHjHjzD50OK8LGDWQwp4rWEsIq5kEqq7rvIM1g==",
       "requires": {
-        "fast-deep-equal": "2.0.1",
-        "fast-json-stable-stringify": "2.0.0",
-        "json-schema-traverse": "0.4.1",
-        "uri-js": "4.2.2"
+        "fast-deep-equal": "^2.0.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
       }
     },
     "ajv-keywords": {
@@ -112,7 +112,7 @@
       "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
       "dev": true,
       "requires": {
-        "sprintf-js": "1.0.3"
+        "sprintf-js": "~1.0.2"
       }
     },
     "array-includes": {
@@ -121,8 +121,8 @@
       "integrity": "sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=",
       "dev": true,
       "requires": {
-        "define-properties": "1.1.3",
-        "es-abstract": "1.13.0"
+        "define-properties": "^1.1.2",
+        "es-abstract": "^1.7.0"
       }
     },
     "asn1": {
@@ -130,7 +130,7 @@
       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
       "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
       "requires": {
-        "safer-buffer": "2.1.2"
+        "safer-buffer": "~2.1.0"
       }
     },
     "assert-plus": {
@@ -164,9 +164,9 @@
       "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
       "dev": true,
       "requires": {
-        "chalk": "1.1.3",
-        "esutils": "2.0.2",
-        "js-tokens": "3.0.2"
+        "chalk": "^1.1.3",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.2"
       },
       "dependencies": {
         "ansi-styles": {
@@ -181,11 +181,11 @@
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
-            "ansi-styles": "2.2.1",
-            "escape-string-regexp": "1.0.5",
-            "has-ansi": "2.0.0",
-            "strip-ansi": "3.0.1",
-            "supports-color": "2.0.0"
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
           }
         },
         "strip-ansi": {
@@ -194,7 +194,7 @@
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
           }
         },
         "supports-color": {
@@ -220,7 +220,7 @@
       "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
       "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
       "requires": {
-        "tweetnacl": "0.14.5"
+        "tweetnacl": "^0.14.3"
       }
     },
     "bops": {
@@ -237,7 +237,7 @@
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
       "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
       "requires": {
-        "balanced-match": "1.0.0",
+        "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
       }
     },
@@ -252,7 +252,7 @@
       "integrity": "sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=",
       "dev": true,
       "requires": {
-        "callsites": "0.2.0"
+        "callsites": "^0.2.0"
       }
     },
     "callsites": {
@@ -271,9 +271,9 @@
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-0.4.0.tgz",
       "integrity": "sha1-UZmj3c0MHv4jvAjBsCewYXbgxk8=",
       "requires": {
-        "ansi-styles": "1.0.0",
-        "has-color": "0.1.7",
-        "strip-ansi": "0.1.1"
+        "ansi-styles": "~1.0.0",
+        "has-color": "~0.1.0",
+        "strip-ansi": "~0.1.0"
       }
     },
     "chardet": {
@@ -294,7 +294,7 @@
       "integrity": "sha1-s12sN2R5+sw+lHR9QdDQ9SOP/LU=",
       "dev": true,
       "requires": {
-        "restore-cursor": "2.0.0"
+        "restore-cursor": "^2.0.0"
       }
     },
     "cli-width": {
@@ -303,6 +303,46 @@
       "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
       "dev": true
     },
+    "cliui": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-7.0.1.tgz",
+      "integrity": "sha512-rcvHOWyGyid6I1WjT/3NatKj2kDt9OdSHSXpyLXaMWFbKpGACNW8pRhhdPUq9MWUOdwn8Rz9AVETjF4105rZZQ==",
+      "requires": {
+        "string-width": "^4.2.0",
+        "strip-ansi": "^6.0.0",
+        "wrap-ansi": "^7.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
+          "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg=="
+        },
+        "is-fullwidth-code-point": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
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+        "string-width": "^2.0.0",
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+        "unist-util-stringify-position": "^2.0.0",
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+        "isexe": "^2.0.0"
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+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
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+        "string-width": "^4.1.0",
+        "strip-ansi": "^6.0.0"
+      },
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+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
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+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
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+        "color-convert": {
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+          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
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+          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
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+        "string-width": {
+          "version": "4.2.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
+          "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
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+            "emoji-regex": "^8.0.0",
+            "is-fullwidth-code-point": "^3.0.0",
+            "strip-ansi": "^6.0.0"
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+        },
+        "strip-ansi": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.0.tgz",
+          "integrity": "sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==",
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@@ -2584,7 +2705,7 @@
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-        "mkdirp": "0.5.1"
+        "mkdirp": "^0.5.1"
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-        "is-function": "1.0.1",
-        "parse-headers": "2.0.2",
-        "xtend": "4.0.1"
+        "global": "~4.3.0",
+        "is-function": "^1.0.1",
+        "parse-headers": "^2.0.0",
+        "xtend": "^4.0.0"
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@@ -2607,6 +2728,60 @@
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       "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
+    },
+    "y18n": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.2.tgz",
+      "integrity": "sha512-CkwaeZw6dQgqgPGeTWKMXCRmMcBgETFlTml1+ZOO+q7kGst8NREJ+eWwFNPVUQ4QGdAaklbqCZHH6Zuep1RjiA=="
+    },
+    "yargs": {
+      "version": "16.0.3",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-16.0.3.tgz",
+      "integrity": "sha512-6+nLw8xa9uK1BOEOykaiYAJVh6/CjxWXK/q9b5FpRgNslt8s22F2xMBqVIKgCRjNgGvGPBy8Vog7WN7yh4amtA==",
+      "requires": {
+        "cliui": "^7.0.0",
+        "escalade": "^3.0.2",
+        "get-caller-file": "^2.0.5",
+        "require-directory": "^2.1.1",
+        "string-width": "^4.2.0",
+        "y18n": "^5.0.1",
+        "yargs-parser": "^20.0.0"
+      },
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+        "ansi-regex": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
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+        },
+        "is-fullwidth-code-point": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
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+          "version": "4.2.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
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+          "requires": {
+            "emoji-regex": "^8.0.0",
+            "is-fullwidth-code-point": "^3.0.0",
+            "strip-ansi": "^6.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.0.tgz",
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+          "requires": {
+            "ansi-regex": "^5.0.0"
+          }
+        }
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+    },
+    "yargs-parser": {
+      "version": "20.2.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.1.tgz",
+      "integrity": "sha512-yYsjuSkjbLMBp16eaOt7/siKTjNVjMm3SoJnIg3sEh/JsvqVVDyjRKmaJV4cl+lNIgq6QEco2i3gDebJl7/vLA=="
     }
   }
 }
diff --git a/package.json b/package.json
index 908b68f..dba323b 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,8 @@
     "jsts": "^2.1.2",
     "query-overpass": "^1.5.5",
     "rimraf": "^2.7.1",
-    "shpjs": "^3.4.3"
+    "shpjs": "^3.4.3",
+    "yargs": "^16.0.3"
   },
   "devDependencies": {
     "standard": "^12.0.1"