COMPASS-3933: Upgrade to bson@4

.travis.yml

@@ -1,15 +1,13 @@
 sudo: false
+dist: trusty
 language: node_js
 node_js:
-  - 5
-  - 6
-  - 7
-  - node
-
+  - 12.4.0
+before_install:
+  - npm install -g npm@latest
+install:
+  - npm ci
 script:
-  - npm run ci
+  - npm run check
   - npm test
-
-cache:
-  directories:
-    - node_modules
+cache: npm

lib/deserialize.js

@@ -1,80 +1,11 @@
-var types = require('./types');
-var strict = require('./modes/strict');
-var isObject = types.isObject;
-var async = require('async');
-var raf = require('raf');
-
+const { EJSON } = require('bson');
 /**
  * Cast values from extended json objects to their BSON or JS types.
  *
  * @param {Any} data - A value which might be esjon encoded.
  * @return {Any}
  * @api private
  */
-module.exports = function deserialize(data) {
-  if (Array.isArray(data)) {
-    return data.map(deserialize);
-  }
-  if (!isObject(data)) {
-    return data;
-  }
-
-  var keys = Object.keys(data);
-  if (keys.length === 0) {
-    return data;
-  }
-
-  var caster = strict.deserialize[keys[0]];
-  if (!caster) {
-    return keys.reduce(function(schema, key) {
-      schema[key] = deserialize(data[key]);
-      return schema;
-    }, {});
-  }
-
-  return caster(data);
+module.exports = function(data) {
+  return EJSON.deserialize(data, { legacy: true, relaxed: false });
 };
-
-function deserializeAsync(data, fn) {
-  if (Array.isArray(data) === true) {
-    async.series(data.map(function(doc) {
-      return function(cb) {
-        raf(function() {
-          deserializeAsync(doc, cb);
-        });
-      };
-    }), fn);
-  } else if (isObject(data) === false) {
-    fn(null, data);
-  } else {
-    var keys = Object.keys(data);
-    if (keys.length === 0) {
-      fn(null, data);
-    } else {
-      var caster = strict.deserialize[keys[0]];
-      if (caster) {
-        fn(null, caster.call(null, data));
-      } else {
-        var res = {};
-        async.series(keys.map(function(key) {
-          return function(cb) {
-            deserializeAsync(data[key], function(err, d) {
-              if (err) {
-                return cb(err);
-              }
-              res[key] = d;
-              cb();
-            });
-          };
-        }), function(err) {
-          if (err) {
-            return fn(err);
-          }
-          fn(null, res);
-        });
-      }
-    }
-  }
-}
-
-module.exports.async = deserializeAsync;