Map column labels to API names and show field labels in column suggestions

[neozhu]

Motivation

Improve the Data Import field-mapping experience when users paste or type Excel/CSV headers that use Salesforce field Labels instead of API Names.

Example:

• Excel header: Customer Segmentation
• Salesforce API Name: CustSegmentation__c

The import UI should be able to resolve the Label to the API Name while still keeping the mapping value as the API Name.

Summary

• Trim column header input before guessing field mappings.
• Preserve existing dotted external-id mapping behavior, such as Relationship.ExternalId.
• Add case-insensitive field Label matching in guessColumn() so a pasted or fully typed Salesforce field Label maps back to the field API Name.
• Add label attributes to field-mapping <option> entries while keeping value as the API Name.
  • Example rendered intent:

    <option value="CustSegmentation__c" label="Customer Segmentation"></option>

• Normalize edited mapping values through guessColumn() so manually entered Labels can be converted to API Names.

Implementation Details

• Added columnLabel(columnName) to look up the Salesforce field Label from the current sObject describe metadata.
• Updated the field mapping datalist to render API Name options with their corresponding Label metadata.
• Updated guessColumn() to:
  • trim the input,
  • run existing external-id matching against the trimmed value,
  • match field.label case-insensitively,
  • return the API Name when a Label match is found,
  • otherwise return the trimmed input.
• Updated ColumnMapper.onColumnValueChange() to apply model.guessColumn(e.target.value) when users edit a mapping field.

Notes

The datalist option value remains the API Name, so selecting a suggestion still fills the API Name into the mapping input. The label attribute is used only to expose the human-readable Salesforce field Label in the browser suggestion UI.

Testing

• Ran syntax validation:

  node --check addon/data-import.js