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Assign own and inherited properties using lodash _.assignIn
Details
Assign own and inherited enumerable properties from sources to the target.
Highlights:
_.assignInExample:
{"a":1}{"b":2}{"a":3}{"a":3,"b":2}Execution
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Tool usage guide
The Assign In Object tool allows you to merge multiple JSON objects into a single target object by leveraging the lodash _.assignIn method, which includes both own and inherited enumerable properties.
Background
A developer has a default configuration object and needs to apply environment-specific overrides.
Problem
Manually combining multiple JSON objects is error-prone and tedious.
How to use
Input the base config as the target and the environment overrides as the source objects.
Target: {"theme": "light", "retries": 3}; Source 1: {"retries": 5}; Source 2: {"debug": true}Outcome
A single object: {"theme": "light", "retries": 5, "debug": true}
Background
Merging a base user template with specific user-provided data fields.
Problem
Need to ensure that user-provided data takes precedence over default template values.
How to use
Place the template in the target field and the user-specific data in the source fields.
Target: {"role": "guest", "active": false}; Source 1: {"role": "admin", "active": true}Outcome
This tool uses lodash _.assignIn, which specifically includes inherited enumerable properties, unlike standard shallow merges that only look at own properties.
Later sources override earlier ones. If Source 1 and Source 2 both define the same key, the value from Source 2 will be present in the final result.
No, the tool performs the operation and returns a new JSON object without altering your original input data.
This tool performs a shallow assignment. Nested objects will be replaced entirely by the corresponding value in the source object rather than being merged recursively.
The tool requires valid JSON syntax. If the input is malformed, the tool will be unable to parse the objects and will return an error.
A merged object: {"role": "admin", "active": true}