1 | const dntGlobals = {};
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2 | export const dntGlobalThis = createMergeProxy(globalThis, dntGlobals);
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3 |
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4 | function createMergeProxy(baseObj, extObj) {
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5 | return new Proxy(baseObj, {
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6 | get(_target, prop, _receiver) {
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7 | if (prop in extObj) {
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8 | return extObj[prop];
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9 | }
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10 | else {
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11 | return baseObj[prop];
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12 | }
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13 | },
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14 | set(_target, prop, value) {
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15 | if (prop in extObj) {
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16 | delete extObj[prop];
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17 | }
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18 | baseObj[prop] = value;
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19 | return true;
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20 | },
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21 | deleteProperty(_target, prop) {
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22 | let success = false;
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23 | if (prop in extObj) {
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24 | delete extObj[prop];
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25 | success = true;
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26 | }
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27 | if (prop in baseObj) {
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28 | delete baseObj[prop];
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29 | success = true;
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30 | }
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31 | return success;
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32 | },
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33 | ownKeys(_target) {
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34 | const baseKeys = Reflect.ownKeys(baseObj);
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35 | const extKeys = Reflect.ownKeys(extObj);
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36 | const extKeysSet = new Set(extKeys);
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37 | return [...baseKeys.filter((k) => !extKeysSet.has(k)), ...extKeys];
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38 | },
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39 | defineProperty(_target, prop, desc) {
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40 | if (prop in extObj) {
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41 | delete extObj[prop];
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42 | }
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43 | Reflect.defineProperty(baseObj, prop, desc);
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44 | return true;
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45 | },
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46 | getOwnPropertyDescriptor(_target, prop) {
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47 | if (prop in extObj) {
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48 | return Reflect.getOwnPropertyDescriptor(extObj, prop);
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49 | }
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50 | else {
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51 | return Reflect.getOwnPropertyDescriptor(baseObj, prop);
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52 | }
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53 | },
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54 | has(_target, prop) {
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55 | return prop in extObj || prop in baseObj;
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56 | },
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57 | });
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58 | }
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59 |
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