The upsert pattern can be used to update a value in an object, or insert it if the key doesn't already exist.
Warning: Only one upsert can be done per object. If you need to insert multiple keys, use sequential until the file converges.
Apply with the Grit CLI
grit apply util_upsert
Simple test
BEFORE
hello({});
hello({ thing: 'two' });
hello({ hello: 'old-id' });
hello({ hello: 'old-string' });
hello({ king: 'old-string' });AFTER
hello({ hello: 'world' });
hello({ thing: 'two', hello: 'world' });
hello({ hello: 'world' });
hello({ hello: 'world' });
hello({ king: 'old-string', hello: 'world' });String key
It handles cases where the key is a string.
BEFORE
string_key({});
string_key({ 'hello-world': 'boss' });AFTER
string_key({ 'hello-world': 'niceness' });
string_key({ 'hello-world': 'niceness' });