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is_expression_attribute() — svelte Function Reference

Architecture documentation for the is_expression_attribute() function in ast.js from the svelte codebase.

Function javascript Compiler Migrator called by 4

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Dependency Diagram

graph TD
  e4437bdc_6df3_4ac6_3252_12819762cc5e["is_expression_attribute()"]
  0c5c28a7_226d_4e7c_e75e_0853c0a9fc2c["ast.js"]
  e4437bdc_6df3_4ac6_3252_12819762cc5e -->|defined in| 0c5c28a7_226d_4e7c_e75e_0853c0a9fc2c
  be9cd3f4_bdc5_dc26_dae4_4a34e45ab7eb["element()"]
  be9cd3f4_bdc5_dc26_dae4_4a34e45ab7eb -->|calls| e4437bdc_6df3_4ac6_3252_12819762cc5e
  c2e078e7_8b02_06d2_5983_59b1af376889["visit_component()"]
  c2e078e7_8b02_06d2_5983_59b1af376889 -->|calls| e4437bdc_6df3_4ac6_3252_12819762cc5e
  8b731563_0657_df8d_6a4b_cd33990e2ed2["validate_element()"]
  8b731563_0657_df8d_6a4b_cd33990e2ed2 -->|calls| e4437bdc_6df3_4ac6_3252_12819762cc5e
  e9a2c29e_d0ca_ab9f_b86f_f22ff802db91["is_event_attribute()"]
  e9a2c29e_d0ca_ab9f_b86f_f22ff802db91 -->|calls| e4437bdc_6df3_4ac6_3252_12819762cc5e
  style e4437bdc_6df3_4ac6_3252_12819762cc5e fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

packages/svelte/src/compiler/utils/ast.js lines 43–50

export function is_expression_attribute(attribute) {
	return (
		(attribute.value !== true && !Array.isArray(attribute.value)) ||
		(Array.isArray(attribute.value) &&
			attribute.value.length === 1 &&
			attribute.value[0].type === 'ExpressionTag')
	);
}

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Frequently Asked Questions

What does is_expression_attribute() do?
is_expression_attribute() is a function in the svelte codebase, defined in packages/svelte/src/compiler/utils/ast.js.
Where is is_expression_attribute() defined?
is_expression_attribute() is defined in packages/svelte/src/compiler/utils/ast.js at line 43.
What calls is_expression_attribute()?
is_expression_attribute() is called by 4 function(s): element, is_event_attribute, validate_element, visit_component.

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