Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1130x 1130x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1182x 1182x 1182x 1182x 350x 350x 350x 1182x 1182x 1132x 1132x 50x 50x 50x 1150x 50x 1150x 40x 40x 40x 40x 40x 40x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 2x 2x 2x 2x 1126x 1126x 1126x | /** @import { AssignmentExpression, AssignmentOperator, Expression, Pattern } from 'estree' */
/** @import { SvelteNode } from '#compiler' */
/** @import { Context, ServerTransformState } from '../types.js' */
import * as b from '../../../../utils/builders.js';
import { build_assignment_value } from '../../../../utils/ast.js';
import { visit_assignment_expression } from '../../shared/assignments.js';
/**
* @param {AssignmentExpression} node
* @param {Context} context
*/
export function AssignmentExpression(node, context) {
return visit_assignment_expression(node, context, build_assignment) ?? context.next();
}
/**
* Only returns an expression if this is not a `$store` assignment, as others can be kept as-is
* @param {AssignmentOperator} operator
* @param {Pattern} left
* @param {Expression} right
* @param {import('zimmerframe').Context<SvelteNode, ServerTransformState>} context
* @returns {Expression | null}
*/
function build_assignment(operator, left, right, context) {
let object = left;
while (object.type === 'MemberExpression') {
// @ts-expect-error
object = object.object;
}
if (object.type !== 'Identifier' || !is_store_name(object.name)) {
return null;
}
const name = object.name.slice(1);
if (!context.state.scope.get(name)) {
return null;
}
if (object === left) {
let value = /** @type {Expression} */ (
context.visit(build_assignment_value(operator, left, right))
);
return b.call('$.store_set', b.id(name), value);
}
return b.call(
'$.store_mutate',
b.assignment('??=', b.id('$$store_subs'), b.object([])),
b.literal(object.name),
b.id(name),
b.assignment(
operator,
/** @type {Pattern} */ (context.visit(left)),
/** @type {Expression} */ (context.visit(right))
)
);
}
/**
* @param {string} name
*/
function is_store_name(name) {
return name[0] === '$' && /[A-Za-z_]/.test(name[1]);
}
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