93 lines
3 KiB
JavaScript
93 lines
3 KiB
JavaScript
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export function map(arg0, arg1, arg2) {
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let target;
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let filter;
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let instructions;
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if (typeof arg1 === "undefined" && typeof arg2 === "undefined") {
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target = {};
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instructions = arg0;
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}
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else {
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target = arg0;
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if (typeof arg1 === "function") {
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filter = arg1;
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instructions = arg2;
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return mapWithFilter(target, filter, instructions);
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}
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else {
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instructions = arg1;
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}
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}
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for (const key of Object.keys(instructions)) {
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if (!Array.isArray(instructions[key])) {
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target[key] = instructions[key];
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continue;
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}
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applyInstruction(target, null, instructions, key);
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}
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return target;
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}
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export const convertMap = (target) => {
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const output = {};
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for (const [k, v] of Object.entries(target || {})) {
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output[k] = [, v];
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}
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return output;
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};
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export const take = (source, instructions) => {
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const out = {};
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for (const key in instructions) {
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applyInstruction(out, source, instructions, key);
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}
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return out;
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};
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const mapWithFilter = (target, filter, instructions) => {
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return map(target, Object.entries(instructions).reduce((_instructions, [key, value]) => {
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if (Array.isArray(value)) {
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_instructions[key] = value;
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}
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else {
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if (typeof value === "function") {
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_instructions[key] = [filter, value()];
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}
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else {
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_instructions[key] = [filter, value];
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}
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}
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return _instructions;
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}, {}));
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};
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const applyInstruction = (target, source, instructions, targetKey) => {
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if (source !== null) {
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let instruction = instructions[targetKey];
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if (typeof instruction === "function") {
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instruction = [, instruction];
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}
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const [filter = nonNullish, valueFn = pass, sourceKey = targetKey] = instruction;
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if ((typeof filter === "function" && filter(source[sourceKey])) || (typeof filter !== "function" && !!filter)) {
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target[targetKey] = valueFn(source[sourceKey]);
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}
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return;
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}
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let [filter, value] = instructions[targetKey];
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if (typeof value === "function") {
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let _value;
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const defaultFilterPassed = filter === undefined && (_value = value()) != null;
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const customFilterPassed = (typeof filter === "function" && !!filter(void 0)) || (typeof filter !== "function" && !!filter);
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if (defaultFilterPassed) {
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target[targetKey] = _value;
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}
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else if (customFilterPassed) {
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target[targetKey] = value();
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}
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}
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else {
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const defaultFilterPassed = filter === undefined && value != null;
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const customFilterPassed = (typeof filter === "function" && !!filter(value)) || (typeof filter !== "function" && !!filter);
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if (defaultFilterPassed || customFilterPassed) {
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target[targetKey] = value;
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}
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}
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};
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const nonNullish = (_) => _ != null;
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const pass = (_) => _;
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