restrict-template-expressions
)Examples of correct code:
const arg = 'foo'; const msg1 = `arg = ${arg}`; const msg2 = `arg = ${arg || 'default'}`;
Examples of incorrect code:
const arg1 = [1, 2]; const msg1 = `arg1 = ${arg1}`; const arg2 = { name: 'Foo' }; const msg2 = `arg2 = ${arg2 || null}`;
The rule accepts an options object with the following properties:
type Options = { // if true, also allow number type in template expressions allowNumber?: boolean; // if true, also allow boolean type in template expressions allowBoolean?: boolean; // if true, also allow null and undefined in template expressions allowNullable?: boolean; }; const defaults = { allowNumber: false, allowBoolean: false, allowNullable: false, };
allowNumber
Examples of additional correct code for this rule with { allowNumber: true }
:
const arg = 123; const msg1 = `arg = ${arg}`; const msg2 = `arg = ${arg || 'zero'}`;
allowBoolean
Examples of additional correct code for this rule with { allowBoolean: true }
:
const arg = true; const msg1 = `arg = ${arg}`; const msg2 = `arg = ${arg || 'not truthy'}`;
allowNullable
Examples of additional correct code for this rule with { allowNullable: true }
:
const arg = condition ? 'ok' : null; const msg1 = `arg = ${arg}`;