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 1114x 1114x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1166x 1166x 1166x 1166x 343x 343x 343x 1166x 1166x 1116x 1116x 50x 50x 50x 1135x 50x 1135x 40x 40x 40x 40x 40x 40x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 2x 2x 2x 2x 1110x 1110x 1110x | /** @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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