openlayers: GeoJSON with OGC CRS URN may raise error

A GeoJSON file with a CRS will raise error Uncaught AssertionError: Assertion failed: transform should be defined and fail to load if there is no colon in the projection. For example the following will work: "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS:84" } } but "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } } won’t work. Note the lack of a colon between CRS and 84.