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@ -15,14 +15,15 @@ const empty = [];
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* @template T
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* @param {T} value
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* @param {boolean} [skip_warning]
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* @param {boolean} [no_tojson]
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* @returns {Snapshot<T>}
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*/
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export function snapshot(value, skip_warning = false) {
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export function snapshot(value, skip_warning = false, no_tojson = false) {
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if (DEV && !skip_warning) {
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/** @type {string[]} */
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const paths = [];
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const copy = clone(value, new Map(), '', paths);
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const copy = clone(value, new Map(), '', paths, null, no_tojson);
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if (paths.length === 1 && paths[0] === '') {
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// value could not be cloned
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w.state_snapshot_uncloneable();
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@ -40,7 +41,7 @@ export function snapshot(value, skip_warning = false) {
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return copy;
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}
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return clone(value, new Map(), '', empty);
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return clone(value, new Map(), '', empty, null, no_tojson);
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}
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/**
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@ -49,10 +50,11 @@ export function snapshot(value, skip_warning = false) {
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* @param {Map<T, Snapshot<T>>} cloned
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* @param {string} path
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* @param {string[]} paths
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* @param {null | T} original The original value, if `value` was produced from a `toJSON` call
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* @param {null | T} [original] The original value, if `value` was produced from a `toJSON` call
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* @param {boolean} [no_tojson]
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* @returns {Snapshot<T>}
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*/
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function clone(value, cloned, path, paths, original = null) {
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function clone(value, cloned, path, paths, original = null, no_tojson = false) {
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if (typeof value === 'object' && value !== null) {
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var unwrapped = cloned.get(value);
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if (unwrapped !== undefined) return unwrapped;
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@ -71,7 +73,7 @@ function clone(value, cloned, path, paths, original = null) {
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for (var i = 0; i < value.length; i += 1) {
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var element = value[i];
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if (i in value) {
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copy[i] = clone(element, cloned, DEV ? `${path}[${i}]` : path, paths);
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copy[i] = clone(element, cloned, DEV ? `${path}[${i}]` : path, paths, null, no_tojson);
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}
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}
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@ -88,8 +90,15 @@ function clone(value, cloned, path, paths, original = null) {
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}
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for (var key in value) {
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// @ts-expect-error
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copy[key] = clone(value[key], cloned, DEV ? `${path}.${key}` : path, paths);
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copy[key] = clone(
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// @ts-expect-error
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value[key],
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cloned,
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DEV ? `${path}.${key}` : path,
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paths,
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null,
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no_tojson
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);
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}
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return copy;
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@ -99,7 +108,7 @@ function clone(value, cloned, path, paths, original = null) {
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return /** @type {Snapshot<T>} */ (structuredClone(value));
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}
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if (typeof (/** @type {T & { toJSON?: any } } */ (value).toJSON) === 'function') {
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if (typeof (/** @type {T & { toJSON?: any } } */ (value).toJSON) === 'function' && !no_tojson) {
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return clone(
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/** @type {T & { toJSON(): any } } */ (value).toJSON(),
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cloned,
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