vega-util - npm Package Compare versions

Comparing version 1.7.0 to 1.7.1

build/vega-util.js

 (function (global, factory) {
-	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
-	typeof define === 'function' && define.amd ? define(['exports'], factory) :
-	(factory((global.vega = global.vega || {})));
-}(this, (function (exports) { 'use strict';
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  factory(global.vega = {});
+}(typeof self !== 'undefined' ? self : this, function (exports) { 'use strict';
 
-var accessor = function(fn, fields, name) {
-  fn.fields = fields || [];
-  fn.fname = name;
-  return fn;
-};
+  function accessor(fn, fields, name) {
+    fn.fields = fields || [];
+    fn.fname = name;
+    return fn;
+  }
 
-function accessorName(fn) {
-  return fn == null ? null : fn.fname;
-}
+  function accessorName(fn) {
+    return fn == null ? null : fn.fname;
+  }
 
-function accessorFields(fn) {
-  return fn == null ? null : fn.fields;
-}
+  function accessorFields(fn) {
+    return fn == null ? null : fn.fields;
+  }
 
-var error = function(message) {
-  throw Error(message);
-};
+  function error(message) {
+    throw Error(message);
+  }
 
-var splitAccessPath = function(p) {
-  var path = [],
-      q = null,
-      b = 0,
-      n = p.length,
-      s = '',
-      i, j, c;
+  function splitAccessPath(p) {
+    var path = [],
+        q = null,
+        b = 0,
+        n = p.length,
+        s = '',
+        i, j, c;
 
-  p = p + '';
+    p = p + '';
 
-  function push() {
-    path.push(s + p.substring(i, j));
-    s = '';
-    i = j + 1;
-  }
+    function push() {
+      path.push(s + p.substring(i, j));
+      s = '';
+      i = j + 1;
+    }
 
-  for (i=j=0; j<n; ++j) {
-    c = p[j];
-    if (c === '\\') {
-      s += p.substring(i, j);
-      i = ++j;
-    } else if (c === q) {
-      push();
-      q = null;
-      b = -1;
-    } else if (q) {
-      continue;
-    } else if (i === b && c === '"') {
-      i = j + 1;
-      q = c;
-    } else if (i === b && c === "'") {
-      i = j + 1;
-      q = c;
-    } else if (c === '.' && !b) {
-      if (j > i) {
+    for (i=j=0; j<n; ++j) {
+      c = p[j];
+      if (c === '\\') {
+        s += p.substring(i, j);
+        i = ++j;
+      } else if (c === q) {
         push();
-      } else {
+        q = null;
+        b = -1;
+      } else if (q) {
+        continue;
+      } else if (i === b && c === '"') {
         i = j + 1;
+        q = c;
+      } else if (i === b && c === "'") {
+        i = j + 1;
+        q = c;
+      } else if (c === '.' && !b) {
+        if (j > i) {
+          push();
+        } else {
+          i = j + 1;
+        }
+      } else if (c === '[') {
+        if (j > i) push();
+        b = i = j + 1;
+      } else if (c === ']') {
+        if (!b) error('Access path missing open bracket: ' + p);
+        if (b > 0) push();
+        b = 0;
+        i = j + 1;
       }
-    } else if (c === '[') {
-      if (j > i) push();
-      b = i = j + 1;
-    } else if (c === ']') {
-      if (!b) error('Access path missing open bracket: ' + p);
-      if (b > 0) push();
-      b = 0;
-      i = j + 1;
     }
-  }
 
-  if (b) error('Access path missing closing bracket: ' + p);
-  if (q) error('Access path missing closing quote: ' + p);
+    if (b) error('Access path missing closing bracket: ' + p);
+    if (q) error('Access path missing closing quote: ' + p);
 
-  if (j > i) {
-    j++;
-    push();
+    if (j > i) {
+      j++;
+      push();
+    }
+
+    return path;
   }
 
-  return path;
-};
+  var isArray = Array.isArray;
 
-var isArray = Array.isArray;
+  function isObject(_) {
+    return _ === Object(_);
+  }
 
-var isObject = function(_) {
-  return _ === Object(_);
-};
+  function isString(_) {
+    return typeof _ === 'string';
+  }
 
-var isString = function(_) {
-  return typeof _ === 'string';
-};
+  function $(x) {
+    return isArray(x) ? '[' + x.map($) + ']'
+      : isObject(x) || isString(x) ?
+        // Output valid JSON and JS source strings.
+        // See http://timelessrepo.com/json-isnt-a-javascript-subset
+        JSON.stringify(x).replace('\u2028','\\u2028').replace('\u2029', '\\u2029')
+      : x;
+  }
 
-function $(x) {
-  return isArray(x) ? '[' + x.map($) + ']'
-    : isObject(x) || isString(x) ?
-      // Output valid JSON and JS source strings.
-      // See http://timelessrepo.com/json-isnt-a-javascript-subset
-      JSON.stringify(x).replace('\u2028','\\u2028').replace('\u2029', '\\u2029')
-    : x;
-}
+  function field(field, name) {
+    var path = splitAccessPath(field),
+        code = 'return _[' + path.map($).join('][') + '];';
 
-var field = function(field, name) {
-  var path = splitAccessPath(field),
-      code = 'return _[' + path.map($).join('][') + '];';
+    return accessor(
+      Function('_', code),
+      [(field = path.length===1 ? path[0] : field)],
+      name || field
+    );
+  }
 
-  return accessor(
-    Function('_', code),
-    [(field = path.length===1 ? path[0] : field)],
-    name || field
-  );
-};
+  var empty = [];
 
-var empty = [];
+  var id = field('id');
 
-var id = field('id');
+  var identity = accessor(function(_) { return _; }, empty, 'identity');
 
-var identity = accessor(function(_) { return _; }, empty, 'identity');
+  var zero = accessor(function() { return 0; }, empty, 'zero');
 
-var zero = accessor(function() { return 0; }, empty, 'zero');
+  var one = accessor(function() { return 1; }, empty, 'one');
 
-var one = accessor(function() { return 1; }, empty, 'one');
+  var truthy = accessor(function() { return true; }, empty, 'true');
 
-var truthy = accessor(function() { return true; }, empty, 'true');
+  var falsy = accessor(function() { return false; }, empty, 'false');
 
-var falsy = accessor(function() { return false; }, empty, 'false');
+  function log(method, level, input) {
+    var args = [level].concat([].slice.call(input));
+    console[method].apply(console, args); // eslint-disable-line no-console
+  }
 
-function log(method, level, input) {
-  var args = [level].concat([].slice.call(input));
-  console[method].apply(console, args); // eslint-disable-line no-console
-}
+  var None  = 0;
+  var Error$1 = 1;
+  var Warn  = 2;
+  var Info  = 3;
+  var Debug = 4;
 
-var None  = 0;
-var Error$1 = 1;
-var Warn  = 2;
-var Info  = 3;
-var Debug = 4;
-
-var logger = function(_) {
-  var level = _ || None;
-  return {
-    level: function(_) {
-      if (arguments.length) {
-        level = +_;
+  function logger(_) {
+    var level = _ || None;
+    return {
+      level: function(_) {
+        if (arguments.length) {
+          level = +_;
+          return this;
+        } else {
+          return level;
+        }
+      },
+      error: function() {
+        if (level >= Error$1) log('error', 'ERROR', arguments);
         return this;
-      } else {
-        return level;
+      },
+      warn: function() {
+        if (level >= Warn) log('warn', 'WARN', arguments);
+        return this;
+      },
+      info: function() {
+        if (level >= Info) log('log', 'INFO', arguments);
+        return this;
+      },
+      debug: function() {
+        if (level >= Debug) log('log', 'DEBUG', arguments);
+        return this;
       }
-    },
-    error: function() {
-      if (level >= Error$1) log('error', 'ERROR', arguments);
-      return this;
-    },
-    warn: function() {
-      if (level >= Warn) log('warn', 'WARN', arguments);
-      return this;
-    },
-    info: function() {
-      if (level >= Info) log('log', 'INFO', arguments);
-      return this;
-    },
-    debug: function() {
-      if (level >= Debug) log('log', 'DEBUG', arguments);
-      return this;
     }
   }
-};
 
-var peek = function(array) {
-  return array[array.length - 1];
-};
+  function peek(array) {
+    return array[array.length - 1];
+  }
 
-var toNumber = function(_) {
-  return _ == null || _ === '' ? null : +_;
-};
+  function toNumber(_) {
+    return _ == null || _ === '' ? null : +_;
+  }
 
-function exp(sign) {
-  return function(x) { return sign * Math.exp(x); };
-}
+  function exp(sign) {
+    return function(x) { return sign * Math.exp(x); };
+  }
 
-function log$1(sign) {
-  return function(x) { return Math.log(sign * x); };
-}
+  function log$1(sign) {
+    return function(x) { return Math.log(sign * x); };
+  }
 
-function pow(exponent) {
-  return function(x) {
-    return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent);
-  };
-}
+  function pow(exponent) {
+    return function(x) {
+      return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent);
+    };
+  }
 
-function pan(domain, delta, lift, ground) {
-  var d0 = lift(domain[0]),
-      d1 = lift(peek(domain)),
-      dd = (d1 - d0) * delta;
+  function pan(domain, delta, lift, ground) {
+    var d0 = lift(domain[0]),
+        d1 = lift(peek(domain)),
+        dd = (d1 - d0) * delta;
 
-  return [
-    ground(d0 - dd),
-    ground(d1 - dd)
-  ];
-}
+    return [
+      ground(d0 - dd),
+      ground(d1 - dd)
+    ];
+  }
 
-function panLinear(domain, delta) {
-  return pan(domain, delta, toNumber, identity);
-}
+  function panLinear(domain, delta) {
+    return pan(domain, delta, toNumber, identity);
+  }
 
-function panLog(domain, delta) {
-  var sign = Math.sign(domain[0]);
-  return pan(domain, delta, log$1(sign), exp(sign));
-}
+  function panLog(domain, delta) {
+    var sign = Math.sign(domain[0]);
+    return pan(domain, delta, log$1(sign), exp(sign));
+  }
 
-function panPow(domain, delta, exponent) {
-  return pan(domain, delta, pow(exponent), pow(1/exponent));
-}
+  function panPow(domain, delta, exponent) {
+    return pan(domain, delta, pow(exponent), pow(1/exponent));
+  }
 
-function zoom(domain, anchor, scale, lift, ground) {
-  var d0 = lift(domain[0]),
-      d1 = lift(peek(domain)),
-      da = anchor != null ? lift(anchor) : (d0 + d1) / 2;
+  function zoom(domain, anchor, scale, lift, ground) {
+    var d0 = lift(domain[0]),
+        d1 = lift(peek(domain)),
+        da = anchor != null ? lift(anchor) : (d0 + d1) / 2;
 
-  return [
-    ground(da + (d0 - da) * scale),
-    ground(da + (d1 - da) * scale)
-  ];
-}
+    return [
+      ground(da + (d0 - da) * scale),
+      ground(da + (d1 - da) * scale)
+    ];
+  }
 
-function zoomLinear(domain, anchor, scale) {
-  return zoom(domain, anchor, scale, toNumber, identity);
-}
+  function zoomLinear(domain, anchor, scale) {
+    return zoom(domain, anchor, scale, toNumber, identity);
+  }
 
-function zoomLog(domain, anchor, scale) {
-  var sign = Math.sign(domain[0]);
-  return zoom(domain, anchor, scale, log$1(sign), exp(sign));
-}
+  function zoomLog(domain, anchor, scale) {
+    var sign = Math.sign(domain[0]);
+    return zoom(domain, anchor, scale, log$1(sign), exp(sign));
+  }
 
-function zoomPow(domain, anchor, scale, exponent) {
-  return zoom(domain, anchor, scale, pow(exponent), pow(1/exponent));
-}
+  function zoomPow(domain, anchor, scale, exponent) {
+    return zoom(domain, anchor, scale, pow(exponent), pow(1/exponent));
+  }
 
-var array = function(_) {
-  return _ != null ? (isArray(_) ? _ : [_]) : [];
-};
+  function array(_) {
+    return _ != null ? (isArray(_) ? _ : [_]) : [];
+  }
 
-var isFunction = function(_) {
-  return typeof _ === 'function';
-};
+  function isFunction(_) {
+    return typeof _ === 'function';
+  }
 
-var compare = function(fields, orders) {
-  var idx = [],
-      cmp = (fields = array(fields)).map(function(f, i) {
-        if (f == null) {
-          return null;
-        } else {
-          idx.push(i);
-          return isFunction(f) ? f
-            : splitAccessPath(f).map($).join('][');
-        }
-      }),
-      n = idx.length - 1,
-      ord = array(orders),
-      code = 'var u,v;return ',
-      i, j, f, u, v, d, t, lt, gt;
+  function compare(fields, orders) {
+    var idx = [],
+        cmp = (fields = array(fields)).map(function(f, i) {
+          if (f == null) {
+            return null;
+          } else {
+            idx.push(i);
+            return isFunction(f) ? f
+              : splitAccessPath(f).map($).join('][');
+          }
+        }),
+        n = idx.length - 1,
+        ord = array(orders),
+        code = 'var u,v;return ',
+        i, j, f, u, v, d, t, lt, gt;
 
-  if (n < 0) return null;
+    if (n < 0) return null;
 
-  for (j=0; j<=n; ++j) {
-    i = idx[j];
-    f = cmp[i];
+    for (j=0; j<=n; ++j) {
+      i = idx[j];
+      f = cmp[i];
 
-    if (isFunction(f)) {
-      d = 'f' + i;
-      u = '(u=this.' + d + '(a))';
-      v = '(v=this.' + d + '(b))';
-      (t = t || {})[d] = f;
-    } else {
-      u = '(u=a['+f+'])';
-      v = '(v=b['+f+'])';
-    }
+      if (isFunction(f)) {
+        d = 'f' + i;
+        u = '(u=this.' + d + '(a))';
+        v = '(v=this.' + d + '(b))';
+        (t = t || {})[d] = f;
+      } else {
+        u = '(u=a['+f+'])';
+        v = '(v=b['+f+'])';
+      }
 
-    d = '((v=v instanceof Date?+v:v),(u=u instanceof Date?+u:u))';
+      d = '((v=v instanceof Date?+v:v),(u=u instanceof Date?+u:u))';
 
-    if (ord[i] !== 'descending') {
-      gt = 1;
-      lt = -1;
-    } else {
-      gt = -1;
-      lt = 1;
+      if (ord[i] !== 'descending') {
+        gt = 1;
+        lt = -1;
+      } else {
+        gt = -1;
+        lt = 1;
+      }
+
+      code += '(' + u+'<'+v+'||u==null)&&v!=null?' + lt
+        + ':(u>v||v==null)&&u!=null?' + gt
+        + ':'+d+'!==u&&v===v?' + lt
+        + ':v!==v&&u===u?' + gt
+        + (i < n ? ':' : ':0');
     }
 
-    code += '(' + u+'<'+v+'||u==null)&&v!=null?' + lt
-      + ':(u>v||v==null)&&u!=null?' + gt
-      + ':'+d+'!==u&&v===v?' + lt
-      + ':v!==v&&u===u?' + gt
-      + (i < n ? ':' : ':0');
-  }
+    f = Function('a', 'b', code + ';');
+    if (t) f = f.bind(t);
 
-  f = Function('a', 'b', code + ';');
-  if (t) f = f.bind(t);
+    fields = fields.reduce(function(map, field) {
+      if (isFunction(field)) {
+        (accessorFields(field) || []).forEach(function(_) { map[_] = 1; });
+      } else if (field != null) {
+        map[field + ''] = 1;
+      }
+      return map;
+    }, {});
 
-  fields = fields.reduce(function(map, field) {
-    if (isFunction(field)) {
-      (accessorFields(field) || []).forEach(function(_) { map[_] = 1; });
-    } else if (field != null) {
-      map[field + ''] = 1;
-    }
-    return map;
-  }, {});
+    return accessor(f, Object.keys(fields));
+  }
 
-  return accessor(f, Object.keys(fields));
-};
+  function constant(_) {
+    return isFunction(_) ? _ : function() { return _; };
+  }
 
-var constant = function(_) {
-  return isFunction(_) ? _ : function() { return _; };
-};
+  function debounce(delay, handler) {
+    var tid, evt;
 
-var debounce = function(delay, handler) {
-  var tid, evt;
+    function callback() {
+      handler(evt);
+      tid = evt = null;
+    }
 
-  function callback() {
-    handler(evt);
-    tid = evt = null;
+    return function(e) {
+      evt = e;
+      if (tid) clearTimeout(tid);
+      tid = setTimeout(callback, delay);
+    };
   }
 
-  return function(e) {
-    evt = e;
-    if (tid) clearTimeout(tid);
-    tid = setTimeout(callback, delay);
-  };
-};
-
-var extend = function(_) {
-  for (var x, k, i=1, len=arguments.length; i<len; ++i) {
-    x = arguments[i];
-    for (k in x) { _[k] = x[k]; }
+  function extend(_) {
+    for (var x, k, i=1, len=arguments.length; i<len; ++i) {
+      x = arguments[i];
+      for (k in x) { _[k] = x[k]; }
+    }
+    return _;
   }
-  return _;
-};
 
-var extentIndex = function(array, f) {
-  var i = -1,
-      n = array.length,
-      a, b, c, u, v;
+  function extentIndex(array, f) {
+    var i = -1,
+        n = array.length,
+        a, b, c, u, v;
 
-  if (f == null) {
-    while (++i < n) {
-      b = array[i];
-      if (b != null && b >= b) {
-        a = c = b;
-        break;
+    if (f == null) {
+      while (++i < n) {
+        b = array[i];
+        if (b != null && b >= b) {
+          a = c = b;
+          break;
+        }
       }
-    }
-    u = v = i;
-    while (++i < n) {
-      b = array[i];
-      if (b != null) {
-        if (a > b) {
-          a = b;
-          u = i;
+      u = v = i;
+      while (++i < n) {
+        b = array[i];
+        if (b != null) {
+          if (a > b) {
+            a = b;
+            u = i;
+          }
+          if (c < b) {
+            c = b;
+            v = i;
+          }
         }
-        if (c < b) {
-          c = b;
-          v = i;
+      }
+    } else {
+      while (++i < n) {
+        b = f(array[i], i, array);
+        if (b != null && b >= b) {
+          a = c = b;
+          break;
         }
       }
-    }
-  } else {
-    while (++i < n) {
-      b = f(array[i], i, array);
-      if (b != null && b >= b) {
-        a = c = b;
-        break;
-      }
-    }
-    u = v = i;
-    while (++i < n) {
-      b = f(array[i], i, array);
-      if (b != null) {
-        if (a > b) {
-          a = b;
-          u = i;
+      u = v = i;
+      while (++i < n) {
+        b = f(array[i], i, array);
+        if (b != null) {
+          if (a > b) {
+            a = b;
+            u = i;
+          }
+          if (c < b) {
+            c = b;
+            v = i;
+          }
         }
-        if (c < b) {
-          c = b;
-          v = i;
-        }
       }
     }
+
+    return [u, v];
   }
 
-  return [u, v];
-};
+  var NULL = {};
 
-var NULL = {};
+  function fastmap(input) {
+    var obj = {},
+        map,
+        test;
 
-var fastmap = function(input) {
-  var obj = {},
-      map,
-      test;
+    function has(key) {
+      return obj.hasOwnProperty(key) && obj[key] !== NULL;
+    }
 
-  function has(key) {
-    return obj.hasOwnProperty(key) && obj[key] !== NULL;
-  }
-
-  map = {
-    size: 0,
-    empty: 0,
-    object: obj,
-    has: has,
-    get: function(key) {
-      return has(key) ? obj[key] : undefined;
-    },
-    set: function(key, value) {
-      if (!has(key)) {
-        ++map.size;
-        if (obj[key] === NULL) --map.empty;
-      }
-      obj[key] = value;
-      return this;
-    },
-    delete: function(key) {
-      if (has(key)) {
-        --map.size;
-        ++map.empty;
-        obj[key] = NULL;
-      }
-      return this;
-    },
-    clear: function() {
-      map.size = map.empty = 0;
-      map.object = obj = {};
-    },
-    test: function(_) {
-      if (arguments.length) {
-        test = _;
-        return map;
-      } else {
-        return test;
-      }
-    },
-    clean: function() {
-      var next = {},
-          size = 0,
-          key, value;
-      for (key in obj) {
-        value = obj[key];
-        if (value !== NULL && (!test || !test(value))) {
-          next[key] = value;
-          ++size;
+    map = {
+      size: 0,
+      empty: 0,
+      object: obj,
+      has: has,
+      get: function(key) {
+        return has(key) ? obj[key] : undefined;
+      },
+      set: function(key, value) {
+        if (!has(key)) {
+          ++map.size;
+          if (obj[key] === NULL) --map.empty;
         }
+        obj[key] = value;
+        return this;
+      },
+      delete: function(key) {
+        if (has(key)) {
+          --map.size;
+          ++map.empty;
+          obj[key] = NULL;
+        }
+        return this;
+      },
+      clear: function() {
+        map.size = map.empty = 0;
+        map.object = obj = {};
+      },
+      test: function(_) {
+        if (arguments.length) {
+          test = _;
+          return map;
+        } else {
+          return test;
+        }
+      },
+      clean: function() {
+        var next = {},
+            size = 0,
+            key, value;
+        for (key in obj) {
+          value = obj[key];
+          if (value !== NULL && (!test || !test(value))) {
+            next[key] = value;
+            ++size;
+          }
+        }
+        map.size = size;
+        map.empty = 0;
+        map.object = (obj = next);
       }
-      map.size = size;
-      map.empty = 0;
-      map.object = (obj = next);
-    }
-  };
+    };
 
-  if (input) Object.keys(input).forEach(function(key) {
-    map.set(key, input[key]);
-  });
+    if (input) Object.keys(input).forEach(function(key) {
+      map.set(key, input[key]);
+    });
 
-  return map;
-};
+    return map;
+  }
 
-var inherits = function(child, parent) {
-  var proto = (child.prototype = Object.create(parent.prototype));
-  proto.constructor = child;
-  return proto;
-};
+  function inherits(child, parent) {
+    var proto = (child.prototype = Object.create(parent.prototype));
+    proto.constructor = child;
+    return proto;
+  }
 
-var isBoolean = function(_) {
-  return typeof _ === 'boolean';
-};
+  function isBoolean(_) {
+    return typeof _ === 'boolean';
+  }
 
-var isDate = function(_) {
-  return Object.prototype.toString.call(_) === '[object Date]';
-};
+  function isDate(_) {
+    return Object.prototype.toString.call(_) === '[object Date]';
+  }
 
-var isNumber = function(_) {
-  return typeof _ === 'number';
-};
+  function isNumber(_) {
+    return typeof _ === 'number';
+  }
 
-var isRegExp = function(_) {
-  return Object.prototype.toString.call(_) === '[object RegExp]';
-};
+  function isRegExp(_) {
+    return Object.prototype.toString.call(_) === '[object RegExp]';
+  }
 
-var key = function(fields, flat) {
-  if (fields) {
-    fields = flat
-      ? array(fields).map(function(f) { return f.replace(/\\(.)/g, '$1'); })
-      : array(fields);
+  function key(fields, flat) {
+    if (fields) {
+      fields = flat
+        ? array(fields).map(function(f) { return f.replace(/\\(.)/g, '$1'); })
+        : array(fields);
+    }
+
+    var fn = !(fields && fields.length)
+      ? function() { return ''; }
+      : Function('_', 'return \'\'+' +
+          fields.map(function(f) {
+            return '_[' + (flat
+                ? $(f)
+                : splitAccessPath(f).map($).join('][')
+              ) + ']';
+          }).join('+\'|\'+') + ';');
+
+    return accessor(fn, fields, 'key');
   }
 
-  var fn = !(fields && fields.length)
-    ? function() { return ''; }
-    : Function('_', 'return \'\'+' +
-        fields.map(function(f) {
-          return '_[' + (flat
-              ? $(f)
-              : splitAccessPath(f).map($).join('][')
-            ) + ']';
-        }).join('+\'|\'+') + ';');
+  function merge(compare, array0, array1, output) {
+    var n0 = array0.length,
+        n1 = array1.length;
 
-  return accessor(fn, fields, 'key');
-};
+    if (!n1) return array0;
+    if (!n0) return array1;
 
-var merge = function(compare, array0, array1, output) {
-  var n0 = array0.length,
-      n1 = array1.length;
+    var merged = output || new array0.constructor(n0 + n1),
+        i0 = 0, i1 = 0, i = 0;
 
-  if (!n1) return array0;
-  if (!n0) return array1;
+    for (; i0<n0 && i1<n1; ++i) {
+      merged[i] = compare(array0[i0], array1[i1]) > 0
+         ? array1[i1++]
+         : array0[i0++];
+    }
 
-  var merged = output || new array0.constructor(n0 + n1),
-      i0 = 0, i1 = 0, i = 0;
+    for (; i0<n0; ++i0, ++i) {
+      merged[i] = array0[i0];
+    }
 
-  for (; i0<n0 && i1<n1; ++i) {
-    merged[i] = compare(array0[i0], array1[i1]) > 0
-       ? array1[i1++]
-       : array0[i0++];
-  }
+    for (; i1<n1; ++i1, ++i) {
+      merged[i] = array1[i1];
+    }
 
-  for (; i0<n0; ++i0, ++i) {
-    merged[i] = array0[i0];
+    return merged;
   }
 
-  for (; i1<n1; ++i1, ++i) {
-    merged[i] = array1[i1];
+  function repeat(str, reps) {
+    var s = '';
+    while (--reps >= 0) s += str;
+    return s;
   }
 
-  return merged;
-};
+  function pad(str, length, padchar, align) {
+    var c = padchar || ' ',
+        s = str + '',
+        n = length - s.length;
 
-var repeat = function(str, reps) {
-  var s = '';
-  while (--reps >= 0) s += str;
-  return s;
-};
+    return n <= 0 ? s
+      : align === 'left' ? repeat(c, n) + s
+      : align === 'center' ? repeat(c, ~~(n/2)) + s + repeat(c, Math.ceil(n/2))
+      : s + repeat(c, n);
+  }
 
-var pad = function(str, length, padchar, align) {
-  var c = padchar || ' ',
-      s = str + '',
-      n = length - s.length;
+  function toBoolean(_) {
+    return _ == null || _ === '' ? null : !_ || _ === 'false' || _ === '0' ? false : !!_;
+  }
 
-  return n <= 0 ? s
-    : align === 'left' ? repeat(c, n) + s
-    : align === 'center' ? repeat(c, ~~(n/2)) + s + repeat(c, Math.ceil(n/2))
-    : s + repeat(c, n);
-};
+  function defaultParser(_) {
+    return isNumber(_) ? _ : isDate(_) ? _ : Date.parse(_);
+  }
 
-var toBoolean = function(_) {
-  return _ == null || _ === '' ? null : !_ || _ === 'false' || _ === '0' ? false : !!_;
-};
+  function toDate(_, parser) {
+    parser = parser || defaultParser;
+    return _ == null || _ === '' ? null : parser(_);
+  }
 
-function defaultParser(_) {
-  return isNumber(_) ? _ : isDate(_) ? _ : Date.parse(_);
-}
+  function toString(_) {
+    return _ == null || _ === '' ? null : _ + '';
+  }
 
-var toDate = function(_, parser) {
-  parser = parser || defaultParser;
-  return _ == null || _ === '' ? null : parser(_);
-};
+  function toSet(_) {
+    for (var s={}, i=0, n=_.length; i<n; ++i) s[_[i]] = true;
+    return s;
+  }
 
-var toString = function(_) {
-  return _ == null || _ === '' ? null : _ + '';
-};
+  function truncate(str, length, align, ellipsis) {
+    var e = ellipsis != null ? ellipsis : '\u2026',
+        s = str + '',
+        n = s.length,
+        l = Math.max(0, length - e.length);
 
-var toSet = function(_) {
-  for (var s={}, i=0, n=_.length; i<n; ++i) s[_[i]] = true;
-  return s;
-};
+    return n <= length ? s
+      : align === 'left' ? e + s.slice(n - l)
+      : align === 'center' ? s.slice(0, Math.ceil(l/2)) + e + s.slice(n - ~~(l/2))
+      : s.slice(0, l) + e;
+  }
 
-var truncate = function(str, length, align, ellipsis) {
-  var e = ellipsis != null ? ellipsis : '\u2026',
-      s = str + '',
-      n = s.length,
-      l = Math.max(0, length - e.length);
-
-  return n <= length ? s
-    : align === 'left' ? e + s.slice(n - l)
-    : align === 'center' ? s.slice(0, Math.ceil(l/2)) + e + s.slice(n - ~~(l/2))
-    : s.slice(0, l) + e;
-};
-
-var visitArray = function(array, filter, visitor) {
-  if (array) {
-    var i = 0, n = array.length, t;
-    if (filter) {
-      for (; i<n; ++i) {
-        if (t = filter(array[i])) visitor(t, i, array);
+  function visitArray(array, filter, visitor) {
+    if (array) {
+      var i = 0, n = array.length, t;
+      if (filter) {
+        for (; i<n; ++i) {
+          if (t = filter(array[i])) visitor(t, i, array);
+        }
+      } else {
+        array.forEach(visitor);
       }
-    } else {
-      array.forEach(visitor);
     }
   }
-};
 
-exports.accessor = accessor;
-exports.accessorName = accessorName;
-exports.accessorFields = accessorFields;
-exports.id = id;
-exports.identity = identity;
-exports.zero = zero;
-exports.one = one;
-exports.truthy = truthy;
-exports.falsy = falsy;
-exports.logger = logger;
-exports.None = None;
-exports.Error = Error$1;
-exports.Warn = Warn;
-exports.Info = Info;
-exports.Debug = Debug;
-exports.panLinear = panLinear;
-exports.panLog = panLog;
-exports.panPow = panPow;
-exports.zoomLinear = zoomLinear;
-exports.zoomLog = zoomLog;
-exports.zoomPow = zoomPow;
-exports.array = array;
-exports.compare = compare;
-exports.constant = constant;
-exports.debounce = debounce;
-exports.error = error;
-exports.extend = extend;
-exports.extentIndex = extentIndex;
-exports.fastmap = fastmap;
-exports.field = field;
-exports.inherits = inherits;
-exports.isArray = isArray;
-exports.isBoolean = isBoolean;
-exports.isDate = isDate;
-exports.isFunction = isFunction;
-exports.isNumber = isNumber;
-exports.isObject = isObject;
-exports.isRegExp = isRegExp;
-exports.isString = isString;
-exports.key = key;
-exports.merge = merge;
-exports.pad = pad;
-exports.peek = peek;
-exports.repeat = repeat;
-exports.splitAccessPath = splitAccessPath;
-exports.stringValue = $;
-exports.toBoolean = toBoolean;
-exports.toDate = toDate;
-exports.toNumber = toNumber;
-exports.toString = toString;
-exports.toSet = toSet;
-exports.truncate = truncate;
-exports.visitArray = visitArray;
+  exports.accessor = accessor;
+  exports.accessorName = accessorName;
+  exports.accessorFields = accessorFields;
+  exports.id = id;
+  exports.identity = identity;
+  exports.zero = zero;
+  exports.one = one;
+  exports.truthy = truthy;
+  exports.falsy = falsy;
+  exports.logger = logger;
+  exports.None = None;
+  exports.Error = Error$1;
+  exports.Warn = Warn;
+  exports.Info = Info;
+  exports.Debug = Debug;
+  exports.panLinear = panLinear;
+  exports.panLog = panLog;
+  exports.panPow = panPow;
+  exports.zoomLinear = zoomLinear;
+  exports.zoomLog = zoomLog;
+  exports.zoomPow = zoomPow;
+  exports.array = array;
+  exports.compare = compare;
+  exports.constant = constant;
+  exports.debounce = debounce;
+  exports.error = error;
+  exports.extend = extend;
+  exports.extentIndex = extentIndex;
+  exports.fastmap = fastmap;
+  exports.field = field;
+  exports.inherits = inherits;
+  exports.isArray = isArray;
+  exports.isBoolean = isBoolean;
+  exports.isDate = isDate;
+  exports.isFunction = isFunction;
+  exports.isNumber = isNumber;
+  exports.isObject = isObject;
+  exports.isRegExp = isRegExp;
+  exports.isString = isString;
+  exports.key = key;
+  exports.merge = merge;
+  exports.pad = pad;
+  exports.peek = peek;
+  exports.repeat = repeat;
+  exports.splitAccessPath = splitAccessPath;
+  exports.stringValue = $;
+  exports.toBoolean = toBoolean;
+  exports.toDate = toDate;
+  exports.toNumber = toNumber;
+  exports.toString = toString;
+  exports.toSet = toSet;
+  exports.truncate = truncate;
+  exports.visitArray = visitArray;
 
-Object.defineProperty(exports, '__esModule', { value: true });
+  Object.defineProperty(exports, '__esModule', { value: true });
 
-})));
+}));

build/vega-util.min.js

@@ -1,1 +0,1 @@
-!function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(n.vega=n.vega||{})}(this,function(n){"use strict";function t(n){return null==n?null:n.fields}function r(n){return g(n)?"["+n.map(r)+"]":h(n)||v(n)?JSON.stringify(n).replace("\u2028","\\u2028").replace("\u2029","\\u2029"):n}function e(n,t,r){var e=[t].concat([].slice.call(r));console[n].apply(console,e)}function u(n){return function(t){return n*Math.exp(t)}}function o(n){return function(t){return Math.log(n*t)}}function i(n){return function(t){return t<0?-Math.pow(-t,n):Math.pow(t,n)}}function c(n,t,r,e){var u=r(n[0]),o=r(M(n)),i=(o-u)*t;return[e(u-i),e(o-i)]}function f(n,t,r,e,u){var o=e(n[0]),i=e(M(n)),c=null!=t?e(t):(o+i)/2;return[u(c+(o-c)*r),u(c+(i-c)*r)]}function l(n){return N(n)?n:D(n)?n:Date.parse(n)}var a=function(n,t,r){return n.fields=t||[],n.fname=r,n},s=function(n){throw Error(n)},p=function(n){function t(){o.push(l+n.substring(r,e)),l="",r=e+1}var r,e,u,o=[],i=null,c=0,f=n.length,l="";for(n+="",r=e=0;e<f;++e)if("\\"===(u=n[e]))l+=n.substring(r,e),r=++e;else if(u===i)t(),i=null,c=-1;else{if(i)continue;r===c&&'"'===u?(r=e+1,i=u):r===c&&"'"===u?(r=e+1,i=u):"."!==u||c?"["===u?(e>r&&t(),c=r=e+1):"]"===u&&(c||s("Access path missing open bracket: "+n),c>0&&t(),c=0,r=e+1):e>r?t():r=e+1}return c&&s("Access path missing closing bracket: "+n),i&&s("Access path missing closing quote: "+n),e>r&&(e++,t()),o},g=Array.isArray,h=function(n){return n===Object(n)},v=function(n){return"string"==typeof n},y=function(n,t){var e=p(n),u="return _["+e.map(r).join("][")+"];";return a(Function("_",u),[n=1===e.length?e[0]:n],t||n)},m=[],b=y("id"),d=a(function(n){return n},m,"identity"),j=a(function(){return 0},m,"zero"),O=a(function(){return 1},m,"one"),x=a(function(){return!0},m,"true"),z=a(function(){return!1},m,"false"),M=function(n){return n[n.length-1]},k=function(n){return null==n||""===n?null:+n},w=function(n){return null!=n?g(n)?n:[n]:[]},A=function(n){return"function"==typeof n},E={},D=function(n){return"[object Date]"===Object.prototype.toString.call(n)},N=function(n){return"number"==typeof n},F=function(n,t){for(var r="";--t>=0;)r+=n;return r};n.accessor=a,n.accessorName=function(n){return null==n?null:n.fname},n.accessorFields=t,n.id=b,n.identity=d,n.zero=j,n.one=O,n.truthy=x,n.falsy=z,n.logger=function(n){var t=n||0;return{level:function(n){return arguments.length?(t=+n,this):t},error:function(){return t>=1&&e("error","ERROR",arguments),this},warn:function(){return t>=2&&e("warn","WARN",arguments),this},info:function(){return t>=3&&e("log","INFO",arguments),this},debug:function(){return t>=4&&e("log","DEBUG",arguments),this}}},n.None=0,n.Error=1,n.Warn=2,n.Info=3,n.Debug=4,n.panLinear=function(n,t){return c(n,t,k,d)},n.panLog=function(n,t){var r=Math.sign(n[0]);return c(n,t,o(r),u(r))},n.panPow=function(n,t,r){return c(n,t,i(r),i(1/r))},n.zoomLinear=function(n,t,r){return f(n,t,r,k,d)},n.zoomLog=function(n,t,r){var e=Math.sign(n[0]);return f(n,t,r,o(e),u(e))},n.zoomPow=function(n,t,r,e){return f(n,t,r,i(e),i(1/e))},n.array=w,n.compare=function(n,e){var u,o,i,c,f,l,s,g,h,v=[],y=(n=w(n)).map(function(n,t){return null==n?null:(v.push(t),A(n)?n:p(n).map(r).join("]["))}),m=v.length-1,b=w(e),d="var u,v;return ";if(m<0)return null;for(o=0;o<=m;++o)i=y[u=v[o]],A(i)?(c="(u=this."+(l="f"+u)+"(a))",f="(v=this."+l+"(b))",(s=s||{})[l]=i):(c="(u=a["+i+"])",f="(v=b["+i+"])"),l="((v=v instanceof Date?+v:v),(u=u instanceof Date?+u:u))","descending"!==b[u]?(h=1,g=-1):(h=-1,g=1),d+="("+c+"<"+f+"||u==null)&&v!=null?"+g+":(u>v||v==null)&&u!=null?"+h+":"+l+"!==u&&v===v?"+g+":v!==v&&u===u?"+h+(u<m?":":":0");return i=Function("a","b",d+";"),s&&(i=i.bind(s)),n=n.reduce(function(n,r){return A(r)?(t(r)||[]).forEach(function(t){n[t]=1}):null!=r&&(n[r+""]=1),n},{}),a(i,Object.keys(n))},n.constant=function(n){return A(n)?n:function(){return n}},n.debounce=function(n,t){function r(){t(u),e=u=null}var e,u;return function(t){u=t,e&&clearTimeout(e),e=setTimeout(r,n)}},n.error=s,n.extend=function(n){for(var t,r,e=1,u=arguments.length;e<u;++e){t=arguments[e];for(r in t)n[r]=t[r]}return n},n.extentIndex=function(n,t){var r,e,u,o,i,c=-1,f=n.length;if(null==t){for(;++c<f;)if(null!=(e=n[c])&&e>=e){r=u=e;break}for(o=i=c;++c<f;)null!=(e=n[c])&&(r>e&&(r=e,o=c),u<e&&(u=e,i=c))}else{for(;++c<f;)if(null!=(e=t(n[c],c,n))&&e>=e){r=u=e;break}for(o=i=c;++c<f;)null!=(e=t(n[c],c,n))&&(r>e&&(r=e,o=c),u<e&&(u=e,i=c))}return[o,i]},n.fastmap=function(n){function t(n){return u.hasOwnProperty(n)&&u[n]!==E}var r,e,u={};return r={size:0,empty:0,object:u,has:t,get:function(n){return t(n)?u[n]:void 0},set:function(n,e){return t(n)||(++r.size,u[n]===E&&--r.empty),u[n]=e,this},delete:function(n){return t(n)&&(--r.size,++r.empty,u[n]=E),this},clear:function(){r.size=r.empty=0,r.object=u={}},test:function(n){return arguments.length?(e=n,r):e},clean:function(){var n,t,o={},i=0;for(n in u)(t=u[n])===E||e&&e(t)||(o[n]=t,++i);r.size=i,r.empty=0,r.object=u=o}},n&&Object.keys(n).forEach(function(t){r.set(t,n[t])}),r},n.field=y,n.inherits=function(n,t){var r=n.prototype=Object.create(t.prototype);return r.constructor=n,r},n.isArray=g,n.isBoolean=function(n){return"boolean"==typeof n},n.isDate=D,n.isFunction=A,n.isNumber=N,n.isObject=h,n.isRegExp=function(n){return"[object RegExp]"===Object.prototype.toString.call(n)},n.isString=v,n.key=function(n,t){n&&(n=t?w(n).map(function(n){return n.replace(/\\(.)/g,"$1")}):w(n));var e=n&&n.length?Function("_","return ''+"+n.map(function(n){return"_["+(t?r(n):p(n).map(r).join("]["))+"]"}).join("+'|'+")+";"):function(){return""};return a(e,n,"key")},n.merge=function(n,t,r,e){var u=t.length,o=r.length;if(!o)return t;if(!u)return r;for(var i=e||new t.constructor(u+o),c=0,f=0,l=0;c<u&&f<o;++l)i[l]=n(t[c],r[f])>0?r[f++]:t[c++];for(;c<u;++c,++l)i[l]=t[c];for(;f<o;++f,++l)i[l]=r[f];return i},n.pad=function(n,t,r,e){var u=r||" ",o=n+"",i=t-o.length;return i<=0?o:"left"===e?F(u,i)+o:"center"===e?F(u,~~(i/2))+o+F(u,Math.ceil(i/2)):o+F(u,i)},n.peek=M,n.repeat=F,n.splitAccessPath=p,n.stringValue=r,n.toBoolean=function(n){return null==n||""===n?null:!(!n||"false"===n||"0"===n||!n)},n.toDate=function(n,t){return t=t||l,null==n||""===n?null:t(n)},n.toNumber=k,n.toString=function(n){return null==n||""===n?null:n+""},n.toSet=function(n){for(var t={},r=0,e=n.length;r<e;++r)t[n[r]]=!0;return t},n.truncate=function(n,t,r,e){var u=null!=e?e:"…",o=n+"",i=o.length,c=Math.max(0,t-u.length);return i<=t?o:"left"===r?u+o.slice(i-c):"center"===r?o.slice(0,Math.ceil(c/2))+u+o.slice(i-~~(c/2)):o.slice(0,c)+u},n.visitArray=function(n,t,r){if(n){var e,u=0,o=n.length;if(t)for(;u<o;++u)(e=t(n[u]))&&r(e,u,n);else 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index.d.ts

@@ -20,3 +20,3 @@ // Functions
 
-export function identity<V>(v: V): () => V;
+export function identity<V>(v: V): V;
 
@@ -31,2 +31,3 @@ export function key(fields: string[], flat?: boolean): (_: object) => string;
 // Type Checkers
+
 export function isArray<T>(a: any | T[]): a is T[];
@@ -42,2 +43,3 @@ export function isBoolean(a: any): a is boolean;
 // Type Coercion
+
 export function toBoolean(a: any): boolean;
@@ -44,0 +46,0 @@ export function toDate(a: any, parser?: (_: any) => number): number;

package.json

 {
   "name": "vega-util",
-  "version": "1.7.0",
+  "version": "1.7.1",
   "description": "JavaScript utilities for Vega.",
@@ -25,14 +25,15 @@ "keywords": [
     "pretest": "rm -rf build && mkdir build && rollup -f umd -n vega -o build/vega-util.js -- index.js",
-    "test": "tape 'test/**/*-test.js' && eslint index.js src test",
+    "test": "tape 'test/**/*-test.js' && eslint index.js src test && tsc",
     "tsc": "tsc",
-    "prepublish": "npm run build",
+    "prepublishOnly": "npm run build",
     "postpublish": "git push && git push --tags && zip -j build/vega-util.zip -- LICENSE README.md build/vega-util.js build/vega-util.min.js"
   },
   "devDependencies": {
-    "eslint": "2",
-    "rollup": "0.43",
+    "@types/node": "10",
+    "eslint": "5",
+    "rollup": "0.68.0",
     "tape": "4",
-    "typescript": "2",
+    "typescript": "3",
     "uglify-js": "3"
   }
 }

README.md

@@ -542,2 +542,5 @@ # vega-util
 with a log level less than or equal to *value* will be written to the console.
+* <b>error</b>(<i>message1</i>[, <i>message2</i>, …]): Logs an error message.
+The messages will be written to the console using the `console.error` method
+if the current log level is [Error](#error) or higher.
 * <b>warn</b>(<i>message1</i>[, <i>message2</i>, …]): Logs a warning message.
@@ -549,3 +552,3 @@ The messages will be written to the console using the `console.warn` method
 method if the current log level is [Info](#info) or higher.
-* <b>warn</b>(<i>message1</i>[, <i>message2</i>, …]): Logs a debugging message.
+* <b>debug</b>(<i>message1</i>[, <i>message2</i>, …]): Logs a debugging message.
 The messages will be written to the console using the `console.log` method
@@ -552,0 +555,0 @@ if the current log level is [Debug](#debug) or higher.

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increased by1.63%

Number of lines in readme file

609

increased by0.5%

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