Validation; reformat source code

2025-12-06 08:18:51 -06:00 · 2025-05-15 14:04:16 -05:00
parent 062b38514b
commit 6469840f0a
37 changed files with 2006 additions and 2438 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+*-off.md
 *.bak
 *.gz
 *.ipynb
@@ -19,6 +20,7 @@
 .apdisk
 .com.apple.timemachine.donotpresent
 .fseventsd
+.idea
 .ipy*
 .vscode
 Icon
@@ -32,12 +34,11 @@ benchmark/tables
 benchmark/tmp.json
 build
 docs/_build
+docs/src/tutorials/customizing.md
+docs/src/tutorials/lmp.md
+docs/src/tutorials/market.md
+docs/src/tutorials/usage.md
 instances/**/*.json
 instances/_source
 local
 notebooks
-docs/src/tutorials/usage.md
-docs/src/tutorials/customizing.md
-docs/src/tutorials/market.md
-docs/src/tutorials/lmp.md
-*-off.md
--- a/web/package-lock.json
+++ b/web/package-lock.json
--- a/web/package.json
+++ b/web/package.json
@@ -16,8 +16,8 @@
    "@types/papaparse": "^5.3.16",
    "@types/react": "^19.1.3",
    "@types/react-dom": "^19.1.3",
-    "@typescript-eslint/utils": "^8.32.1",
    "ajv": "^8.17.1",
+    "eslint": "^8.57.1",
    "papaparse": "^5.5.2",
    "react": "^19.1.0",
    "react-dom": "^19.1.0",
@@ -58,6 +58,6 @@
  },
  "devDependencies": {
    "@types/tabulator-tables": "^6.2.6",
-    "eslint": "^8.57.1"
+    "prettier": "3.5.3"
  }
 }
--- a/web/public/index.html
+++ b/web/public/index.html
@@ -1,14 +1,11 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
  <head>
    <meta charset="utf-8" />
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <meta name="theme-color" content="#000000" />
-    <meta
-      name="description"
-      content="UnitCommitment.jl Case Builder"
-    />
+    <meta name="description" content="UnitCommitment.jl Case Builder" />
    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
    <title>Case Builder - UnitCommitment.jl</title>
--- a/web/src/components/CaseBuilder/Buses/BusOperations.test.ts
+++ b/web/src/components/CaseBuilder/Buses/BusOperations.test.ts
@@ -4,22 +4,27 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import {UnitCommitmentScenario} from "../../../core/data";
-import {changeBusData, createBus, deleteBus, renameBus} from "./BusOperations";
+import { UnitCommitmentScenario } from "../../../core/data";
+import {
+  changeBusData,
+  createBus,
+  deleteBus,
+  renameBus,
+} from "./BusOperations";
 import assert from "node:assert";

 export const BUS_TEST_DATA_1: UnitCommitmentScenario = {
-    "Parameters": {
-        "Version": "0.4",
+  Parameters: {
+    Version: "0.4",
    "Power balance penalty ($/MW)": 1000.0,
    "Time horizon (h)": 5,
    "Time step (min)": 60,
  },
-    "Buses": {
-        "b1": {"Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044]},
-        "b2": {"Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939]},
-        "b3": {"Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268]},
-    }
+  Buses: {
+    b1: { "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044] },
+    b2: { "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939] },
+    b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268] },
+  },
 };

 test("createBus", () => {
@@ -29,56 +34,75 @@ test("createBus", () => {

 test("changeBusData", () => {
  let scenario = BUS_TEST_DATA_1;
-    scenario = changeBusData("b1", "Load 0", "99", scenario);
-    scenario = changeBusData("b1", "Load 3", "99", scenario);
-    scenario = changeBusData("b3", "Load 4", "99", scenario);
+  let err = null;
+
+  [scenario, err] = changeBusData("b1", "Load 0", "99", scenario);
+  assert.equal(err, null);
+
+  [scenario, err] = changeBusData("b1", "Load 3", "99", scenario);
+  assert.equal(err, null);
+
+  [scenario, err] = changeBusData("b3", "Load 4", "99", scenario);
+  assert.equal(err, null);
+
  assert.deepEqual(scenario, {
-        "Parameters": {
-            "Version": "0.4",
+    Parameters: {
+      Version: "0.4",
      "Power balance penalty ($/MW)": 1000.0,
      "Time horizon (h)": 5,
      "Time step (min)": 60,
    },
-        "Buses": {
-            "b1": {"Load (MW)": [99, 34.38835, 33.45083, 99, 33.25044]},
-            "b2": {"Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939]},
-            "b3": {"Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 99]},
-        }
+    Buses: {
+      b1: { "Load (MW)": [99, 34.38835, 33.45083, 99, 33.25044] },
+      b2: { "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939] },
+      b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 99] },
+    },
  });
 });

+test("changeBusData with invalid numbers", () => {
+  let [, err] = changeBusData("b1", "Load 0", "xx", BUS_TEST_DATA_1);
+  assert(err !== null);
+  assert.equal(err.message, "Invalid value: xx");
+});
+
 test("deleteBus", () => {
  let scenario = BUS_TEST_DATA_1;
  scenario = deleteBus("b2", scenario);
  assert.deepEqual(scenario, {
-        "Parameters": {
-            "Version": "0.4",
+    Parameters: {
+      Version: "0.4",
      "Power balance penalty ($/MW)": 1000.0,
      "Time horizon (h)": 5,
      "Time step (min)": 60,
    },
-        "Buses": {
-            "b1": {"Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044]},
-            "b3": {"Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268]},
-        }
+    Buses: {
+      b1: { "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044] },
+      b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268] },
+    },
  });
 });

-
 test("renameBus", () => {
-    let scenario = BUS_TEST_DATA_1;
-    scenario = renameBus("b2", "b99", scenario);
+  let [scenario, err] = renameBus("b2", "b99", BUS_TEST_DATA_1);
+  assert(err === null);
  assert.deepEqual(scenario, {
-        "Parameters": {
-            "Version": "0.4",
+    Parameters: {
+      Version: "0.4",
      "Power balance penalty ($/MW)": 1000.0,
      "Time horizon (h)": 5,
      "Time step (min)": 60,
    },
-        "Buses": {
-            "b1": {"Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044]},
-            "b99": {"Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939]},
-            "b3": {"Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268]},
-        }
+    Buses: {
+      b1: { "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044] },
+      b99: { "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939] },
+      b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268] },
+    },
  });
 });
+
+test("renameBus with duplicated name", () => {
+  let [, err] = renameBus("b3", "b1", BUS_TEST_DATA_1);
+  assert(err != null);
+  assert.equal(err.message, `Bus b1 already exists`);
+});
--- a/web/src/components/CaseBuilder/Buses/BusOperations.ts
+++ b/web/src/components/CaseBuilder/Buses/BusOperations.ts
@@ -4,9 +4,10 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import {Buses, UnitCommitmentScenario} from "../../../core/data";
+import { Buses, UnitCommitmentScenario } from "../../../core/data";
+import { ValidationError } from "../../../core/Validation/validate";

-function generateUniqueBusName(scenario: UnitCommitmentScenario) {
+const generateUniqueBusName = (scenario: UnitCommitmentScenario) => {
  let newBusName = "b";
  let counter = 1;
  let name = `${newBusName}${counter}`;
@@ -15,67 +16,91 @@ function generateUniqueBusName(scenario: UnitCommitmentScenario) {
    name = `${newBusName}${counter}`;
  }
  return name;
-}
+};

-function generateDefaultBusLoad(scenario: UnitCommitmentScenario) {
-    const T = scenario.Parameters["Time horizon (h)"] * (60 / scenario.Parameters["Time step (min)"]);
+const generateDefaultBusLoad = (scenario: UnitCommitmentScenario) => {
+  const T =
+    scenario.Parameters["Time horizon (h)"] *
+    (60 / scenario.Parameters["Time step (min)"]);
  return new Array(T).fill(0);
-}
+};

-export function createBus(scenario: UnitCommitmentScenario) {
+export const createBus = (scenario: UnitCommitmentScenario) => {
  const load = generateDefaultBusLoad(scenario);
  let name = generateUniqueBusName(scenario);
  return {
    ...scenario,
-        "Buses": {
+    Buses: {
      ...scenario.Buses,
      [name]: {
-                "Load (MW)": load
-            }
-        }
+        "Load (MW)": load,
+      },
+    },
  };
-}
+};

-export function changeBusData(bus: string, field: string, newValue: string, scenario: UnitCommitmentScenario) {
+export const changeBusData = (
+  bus: string,
+  field: string,
+  newValueStr: string,
+  scenario: UnitCommitmentScenario,
+): [UnitCommitmentScenario, ValidationError | null] => {
  // Load (MW)
  const match = field.match(/Load (\d+)/);
-    if(match) {
+  if (match) {
+    const newValueFloat = parseFloat(newValueStr);
+    if (isNaN(newValueFloat)) {
+      return [scenario, { message: `Invalid value: ${newValueStr}` }];
+    }
    const idx = parseInt(match[1]!, 10);
    const newLoad = [...scenario.Buses[bus]!["Load (MW)"]];
-        newLoad[idx] = parseFloat(newValue);
-        return {
+    newLoad[idx] = newValueFloat;
+    return [
+      {
        ...scenario,
        Buses: {
          ...scenario.Buses,
          [bus]: {
            "Load (MW)": newLoad,
-                }
-            }
-        };
+          },
+        },
+      },
+      null,
+    ];
  }

  throw Error(`Unknown field: ${field}`);
-}
+};

-export function deleteBus(bus: string, scenario: UnitCommitmentScenario) {
-    const { [bus]: _, ...newBuses} = scenario.Buses;
+export const deleteBus = (bus: string, scenario: UnitCommitmentScenario) => {
+  const { [bus]: _, ...newBuses } = scenario.Buses;
  return {
    ...scenario,
-        Buses: newBuses
+    Buses: newBuses,
  };
-}
+};

-export function renameBus(oldName: string, newName: string, scenario: UnitCommitmentScenario) {
+export const renameBus = (
+  oldName: string,
+  newName: string,
+  scenario: UnitCommitmentScenario,
+): [UnitCommitmentScenario, ValidationError | null] => {
+  if (newName in scenario.Buses) {
+    return [scenario, { message: `Bus ${newName} already exists` }];
+  }
  const newBuses: Buses = Object.keys(scenario.Buses).reduce((acc, val) => {
-       if(val === oldName) {
+    if (val === oldName) {
      acc[newName] = scenario.Buses[val]!;
    } else {
      acc[val] = scenario.Buses[val]!;
    }
    return acc;
  }, {} as Buses);
-    return {
+  return [
+    {
      ...scenario,
-        Buses: newBuses
-    };
-}
+      Buses: newBuses,
+    },
+    null,
+  ];
+};
--- a/web/src/components/CaseBuilder/Buses/Buses.tsx
+++ b/web/src/components/CaseBuilder/Buses/Buses.tsx
@@ -1,58 +0,0 @@
-/*
- * UnitCommitment.jl: Optimization Package for Security-Constrained Unit Commitment
- * Copyright (C) 2020-2025, UChicago Argonne, LLC. All rights reserved.
- * Released under the modified BSD license. See COPYING.md for more details.
- */
-
-import SectionHeader from "../../Common/SectionHeader/SectionHeader";
-import {UnitCommitmentScenario} from "../../../core/data";
-import BusesTable, {generateBusesCsv, parseBusesCsv} from "./BusesTable";
-import SectionButton from "../../Common/Buttons/SectionButton";
-import {faDownload, faPlus, faUpload} from "@fortawesome/free-solid-svg-icons";
-import {offerDownload} from "../../Common/io";
-import FileUploadElement from "../../Common/Buttons/FileUploadElement";
-import {useRef} from "react";
-
-interface BusesProps {
-    scenario: UnitCommitmentScenario,
-    onBusCreated: () => void,
-    onBusDataChanged: (bus: string, field: string, newValue: string) => void,
-    onBusDeleted: (bus: string) => void,
-    onBusRenamed: (oldName: string, newName: string) => void,
-    onDataChanged: (scenario: UnitCommitmentScenario) => void,
-}
-
-function BusesComponent(props: BusesProps) {
-    const fileUploadElem = useRef<FileUploadElement>(null);
-
-    const onDownload = () => {
-        const csvContents = generateBusesCsv(props.scenario);
-        offerDownload(csvContents, "text/csv", "buses.csv");
-    };
-
-    const onUpload = () => {
-        fileUploadElem.current!.showFilePicker((csvContents: any) => {
-            const newScenario = parseBusesCsv(props.scenario, csvContents);
-            props.onDataChanged(newScenario);
-        });
-    };
-
-    return (
-        <div>
-            <SectionHeader title="Buses">
-                <SectionButton icon={faPlus} tooltip="Add" onClick={props.onBusCreated}/>
-                <SectionButton icon={faDownload} tooltip="Download" onClick={onDownload}/>
-                <SectionButton icon={faUpload} tooltip="Upload" onClick={onUpload}/>
-            </SectionHeader>
-            <BusesTable
-                scenario={props.scenario}
-                onBusDataChanged={props.onBusDataChanged}
-                onBusDeleted={props.onBusDeleted}
-                onBusRenamed={props.onBusRenamed}
-            />
-            <FileUploadElement ref={fileUploadElem} accept=".csv"/>
-        </div>
-    );
-}
-
-export default BusesComponent;
--- a/web/src/components/CaseBuilder/Buses/BusesComponent.tsx
+++ b/web/src/components/CaseBuilder/Buses/BusesComponent.tsx
@@ -0,0 +1,75 @@
+/*
+ * UnitCommitment.jl: Optimization Package for Security-Constrained Unit Commitment
+ * Copyright (C) 2020-2025, UChicago Argonne, LLC. All rights reserved.
+ * Released under the modified BSD license. See COPYING.md for more details.
+ */
+
+import SectionHeader from "../../Common/SectionHeader/SectionHeader";
+import { UnitCommitmentScenario } from "../../../core/data";
+import BusesTable, { generateBusesCsv, parseBusesCsv } from "./BusesTable";
+import SectionButton from "../../Common/Buttons/SectionButton";
+import {
+  faDownload,
+  faPlus,
+  faUpload,
+} from "@fortawesome/free-solid-svg-icons";
+import { offerDownload } from "../../Common/io";
+import FileUploadElement from "../../Common/Buttons/FileUploadElement";
+import { useRef } from "react";
+import { ValidationError } from "../../../core/Validation/validate";
+
+interface BusesProps {
+  scenario: UnitCommitmentScenario;
+  onBusCreated: () => void;
+  onBusDataChanged: (
+    bus: string,
+    field: string,
+    newValue: string,
+  ) => ValidationError | null;
+  onBusDeleted: (bus: string) => void;
+  onBusRenamed: (oldName: string, newName: string) => ValidationError | null;
+  onDataChanged: (scenario: UnitCommitmentScenario) => void;
+}
+
+function BusesComponent(props: BusesProps) {
+  const fileUploadElem = useRef<FileUploadElement>(null);
+
+  const onDownload = () => {
+    const csvContents = generateBusesCsv(props.scenario);
+    offerDownload(csvContents, "text/csv", "buses.csv");
+  };
+
+  const onUpload = () => {
+    fileUploadElem.current!.showFilePicker((csvContents: any) => {
+      const newScenario = parseBusesCsv(props.scenario, csvContents);
+      props.onDataChanged(newScenario);
+    });
+  };
+
+  return (
+    <div>
+      <SectionHeader title="Buses">
+        <SectionButton
+          icon={faPlus}
+          tooltip="Add"
+          onClick={props.onBusCreated}
+        />
+        <SectionButton
+          icon={faDownload}
+          tooltip="Download"
+          onClick={onDownload}
+        />
+        <SectionButton icon={faUpload} tooltip="Upload" onClick={onUpload} />
+      </SectionHeader>
+      <BusesTable
+        scenario={props.scenario}
+        onBusDataChanged={props.onBusDataChanged}
+        onBusDeleted={props.onBusDeleted}
+        onBusRenamed={props.onBusRenamed}
+      />
+      <FileUploadElement ref={fileUploadElem} accept=".csv" />
+    </div>
+  );
+}
+
+export default BusesComponent;
--- a/web/src/components/CaseBuilder/Buses/BusesTable.test.ts
+++ b/web/src/components/CaseBuilder/Buses/BusesTable.test.ts
@@ -5,8 +5,8 @@
 */

 import assert from "node:assert";
-import {generateBusesCsv, parseBusesCsv} from "./BusesTable";
-import {BUS_TEST_DATA_1} from "./BusOperations.test";
+import { generateBusesCsv, parseBusesCsv } from "./BusesTable";
+import { BUS_TEST_DATA_1 } from "./BusOperations.test";

 test("generate CSV", () => {
  const actualCsv = generateBusesCsv(BUS_TEST_DATA_1);
@@ -25,26 +25,13 @@ test("parse valid CSV", () => {
    "b3,27.3729,26.29698,25.58005,25.15675,25.4268";
  const newScenario = parseBusesCsv(BUS_TEST_DATA_1, csvContents);
  assert.deepEqual(newScenario.Buses, {
-        "b1": {
-            "Load (MW)": [
-                0,
-                1,
-                2,
-                3,
-                4,
-            ]
+    b1: {
+      "Load (MW)": [0, 1, 2, 3, 4],
    },
-        "b3": {
-            "Load (MW)": [
-                27.3729,
-                26.29698,
-                25.58005,
-                25.15675,
-                25.4268,
-            ]
+    b3: {
+      "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268],
    },
  });
-
 });

 test("parse invalid CSV (wrong headers)", () => {
--- a/web/src/components/CaseBuilder/Buses/BusesTable.tsx
+++ b/web/src/components/CaseBuilder/Buses/BusesTable.tsx
@@ -4,10 +4,15 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import Papa from 'papaparse';
-import {Buses, UnitCommitmentScenario} from "../../../core/data";
-import {useEffect, useRef} from "react";
-import {CellComponent, ColumnDefinition, TabulatorFull as Tabulator} from "tabulator-tables";
+import Papa from "papaparse";
+import { Buses, UnitCommitmentScenario } from "../../../core/data";
+import { useEffect, useRef } from "react";
+import {
+  CellComponent,
+  ColumnDefinition,
+  TabulatorFull as Tabulator,
+} from "tabulator-tables";
+import { ValidationError } from "../../../core/Validation/validate";

 const generateBusesTableData = (scenario: UnitCommitmentScenario) => {
  const tableData: { [name: string]: any }[] = [];
@@ -22,7 +27,9 @@ const generateBusesTableData = (scenario: UnitCommitmentScenario) => {
  return tableData;
 };

-const generateBusesTableColumns = (scenario: UnitCommitmentScenario): [ColumnDefinition] => {
+const generateBusesTableColumns = (
+  scenario: UnitCommitmentScenario,
+): [ColumnDefinition] => {
  const timeHorizonHours = scenario["Parameters"]["Time horizon (h)"];
  const timeStepMin = scenario["Parameters"]["Time step (min)"];
  const columnsCommonAttrs: ColumnDefinition = {
@@ -46,10 +53,14 @@ const generateBusesTableColumns = (scenario: UnitCommitmentScenario): [ColumnDef
      width: 150,
    },
  ];
-    for (let m = 0, offset = 0; m < timeHorizonHours * 60; m += timeStepMin, offset += 1) {
+  for (
+    let m = 0, offset = 0;
+    m < timeHorizonHours * 60;
+    m += timeStepMin, offset += 1
+  ) {
    const hours = Math.floor(m / 60);
    const mins = m % 60;
-        const formattedTime = `${String(hours).padStart(2, '0')}:${String(mins).padStart(2, '0')}`;
+    const formattedTime = `${String(hours).padStart(2, "0")}:${String(mins).padStart(2, "0")}`;
    columns.push({
      ...columnsCommonAttrs,
      title: `Load (MW)<div class="subtitle">${formattedTime}</div>`,
@@ -62,24 +73,33 @@ const generateBusesTableColumns = (scenario: UnitCommitmentScenario): [ColumnDef

 export const generateBusesCsv = (scenario: UnitCommitmentScenario) => {
  const columns = generateBusesTableColumns(scenario);
-    const csvHeader = columns.map(row => row.field).join(",");
-    const csvBody = Object.entries(scenario.Buses).map(([busName, busData]) => {
+  const csvHeader = columns.map((row) => row.field).join(",");
+  const csvBody = Object.entries(scenario.Buses)
+    .map(([busName, busData]) => {
      const csvLoad = busData["Load (MW)"].join(",");
      return `${busName},${csvLoad}`;
-    }).join("\n");
+    })
+    .join("\n");
  return `${csvHeader}\n${csvBody}`;
 };

 function getNumTimesteps(scenario: UnitCommitmentScenario) {
-    return scenario.Parameters["Time horizon (h)"] * scenario.Parameters["Time step (min)"] / 60;
+  return (
+    (scenario.Parameters["Time horizon (h)"] *
+      scenario.Parameters["Time step (min)"]) /
+    60
+  );
 }

-export const parseBusesCsv = (scenario: UnitCommitmentScenario, csvData: string): UnitCommitmentScenario => {
+export const parseBusesCsv = (
+  scenario: UnitCommitmentScenario,
+  csvData: string,
+): UnitCommitmentScenario => {
  const results = Papa.parse(csvData, {
    header: true,
    skipEmptyLines: true,
    transformHeader: (header) => header.trim(),
-        transform: (value) => value.trim()
+    transform: (value) => value.trim(),
  });

  // Check for parsing errors
@@ -88,7 +108,9 @@ export const parseBusesCsv = (scenario: UnitCommitmentScenario, csvData: string)
  }

  // Check CSV headers
-    const expectedFields = generateBusesTableColumns(scenario).map(col => col.field)!;
+  const expectedFields = generateBusesTableColumns(scenario).map(
+    (col) => col.field,
+  )!;
  const actualFields = results.meta.fields!;
  for (let i = 0; i < expectedFields.length; i++) {
    if (expectedFields[i] !== actualFields[i]) {
@@ -107,7 +129,7 @@ export const parseBusesCsv = (scenario: UnitCommitmentScenario, csvData: string)
      busLoad[j] = parseFloat(row[`Load ${j}`]);
    }
    buses[busName] = {
-            "Load (MW)": busLoad
+      "Load (MW)": busLoad,
    };
  }
  return {
@@ -117,61 +139,60 @@ export const parseBusesCsv = (scenario: UnitCommitmentScenario, csvData: string)
 };

 interface BusesTableProps {
-    scenario: UnitCommitmentScenario
-    onBusDataChanged: (bus: string, field: string, newValue: string) => void,
-    onBusDeleted: (bus: string) => void,
-    onBusRenamed: (oldName: string, newName: string) => void,
+  scenario: UnitCommitmentScenario;
+  onBusDataChanged: (
+    bus: string,
+    field: string,
+    newValue: string,
+  ) => ValidationError | null;
+  onBusDeleted: (bus: string) => void;
+  onBusRenamed: (oldName: string, newName: string) => ValidationError | null;
 }

 function BusesTable(props: BusesTableProps) {
  const tableContainerRef = useRef<HTMLDivElement | null>(null);

  useEffect(() => {
+    const scenario = props.scenario;
    const onCellEdited = (cell: CellComponent) => {
      let newValue = cell.getValue();
      let oldValue = cell.getOldValue();
-            if (newValue === oldValue) return;
+      // eslint-disable-next-line eqeqeq
+      if (newValue == oldValue) return;

      if (cell.getField() === "Name") {
        if (newValue === "") {
          props.onBusDeleted(oldValue);
          cell.getRow().delete();
        } else {
-                    props.onBusRenamed(
-                        oldValue,
-                        newValue,
-                    );
+          const err = props.onBusRenamed(oldValue, newValue);
+          if (err) {
+            cell.restoreOldValue();
+          }
        }
      } else {
        const row = cell.getRow().getData();
        const bus = row["Name"];
-                props.onBusDataChanged(
-                    bus, cell.getField(), newValue
-                );
+        const err = props.onBusDataChanged(bus, cell.getField(), newValue);
+        if (err) {
+          cell.restoreOldValue();
+        }
      }
    };

    if (tableContainerRef.current === null) return;
    const table = new Tabulator(tableContainerRef.current, {
      layout: "fitColumns",
-            data: generateBusesTableData(props.scenario),
-            columns: generateBusesTableColumns(props.scenario),
+      data: generateBusesTableData(scenario),
+      columns: generateBusesTableColumns(scenario),
      maxHeight: "500px",
    });
    table.on("cellEdited", (cell) => {
      onCellEdited(cell);
    });
-        table.on("cellEditing", (cell) => {
-        });
-        // table.on("scrollHorizontal", (left, leftDir) => {
-        //   console.log(left, leftDir);
-        // });
-        table.rowManager.scrollHorizontal(100, false);
-        // table.columnManager.scrollHorizontal(100, false);
-    }, [props, props.scenario]);
+  }, [props]);

-    return <div className="tableContainer" ref={tableContainerRef}/>;
+  return <div className="tableContainer" ref={tableContainerRef} />;
 }

 export default BusesTable;
-
--- a/web/src/components/CaseBuilder/CaseBuilder.tsx
+++ b/web/src/components/CaseBuilder/CaseBuilder.tsx
@@ -6,16 +6,25 @@

 import Header from "./Header/Header";
 import Parameters from "./Parameters/Parameters";
-import BusesComponent from "./Buses/Buses";
-import {BLANK_SCENARIO, TEST_SCENARIO, UnitCommitmentScenario} from "../../core/data";
+import BusesComponent from "./Buses/BusesComponent";
+import {
+  BLANK_SCENARIO,
+  TEST_SCENARIO,
+  UnitCommitmentScenario,
+} from "../../core/data";

 import "tabulator-tables/dist/css/tabulator.min.css";
 import "../Common/Forms/Tables.css";
-import {useState} from "react";
+import { useState } from "react";
 import Footer from "./Footer/Footer";
-import {validate} from "../../core/Validation/validate";
-import {offerDownload} from "../Common/io";
-import {changeBusData, createBus, deleteBus, renameBus} from "./Buses/BusOperations";
+import { validate, ValidationError } from "../../core/Validation/validate";
+import { offerDownload } from "../Common/io";
+import {
+  changeBusData,
+  createBus,
+  deleteBus,
+  renameBus,
+} from "./Buses/BusOperations";

 const CaseBuilder = () => {
  const [scenario, setScenario] = useState(TEST_SCENARIO);
@@ -27,8 +36,8 @@ const CaseBuilder = () => {
  const onSave = () => {
    offerDownload(
      JSON.stringify(scenario, null, 2),
-            'application/json',
-            'case.json',
+      "application/json",
+      "case.json",
    );
  };

@@ -37,9 +46,18 @@ const CaseBuilder = () => {
    setScenario(newScenario);
  };

-    const onBusDataChanged = (bus: string, field: string, newValue: string) => {
-        const newScenario = changeBusData(bus, field, newValue, scenario);
+  const onBusDataChanged = (
+    bus: string,
+    field: string,
+    newValue: string,
+  ): ValidationError | null => {
+    const [newScenario, err] = changeBusData(bus, field, newValue, scenario);
+    if (err) {
+      console.log(err);
+      return err;
+    }
    setScenario(newScenario);
+    return null;
  };

  const onBusDeleted = (bus: string) => {
@@ -47,9 +65,17 @@ const CaseBuilder = () => {
    setScenario(newScenario);
  };

-    const onBusRenamed = (oldName: string, newName: string) => {
-        const newScenario = renameBus(oldName, newName, scenario);
+  const onBusRenamed = (
+    oldName: string,
+    newName: string,
+  ): ValidationError | null => {
+    const [newScenario, err] = renameBus(oldName, newName, scenario);
+    if (err) {
+      console.log(err);
+      return err;
+    }
    setScenario(newScenario);
+    return null;
  };

  const onDataChanged = (newScenario: UnitCommitmentScenario) => {
@@ -64,14 +90,11 @@ const CaseBuilder = () => {
    setScenario(scenario);
  };

-    return <div>
-        <Header
-            onClear={onClear}
-            onSave={onSave}
-            onLoad={onLoad}
-        />
+  return (
+    <div>
+      <Header onClear={onClear} onSave={onSave} onLoad={onLoad} />
      <div className="content">
-            <Parameters scenario={scenario}/>
+        <Parameters scenario={scenario} />
        <BusesComponent
          scenario={scenario}
          onBusCreated={onBusCreated}
@@ -81,8 +104,9 @@ const CaseBuilder = () => {
          onDataChanged={onDataChanged}
        />
      </div>
-        <Footer/>
-    </div>;
+      <Footer />
+    </div>
+  );
 };

 export default CaseBuilder;
--- a/web/src/components/CaseBuilder/Footer/Footer.tsx
+++ b/web/src/components/CaseBuilder/Footer/Footer.tsx
@@ -9,7 +9,8 @@ import styles from "./Footer.module.css";
 function Footer() {
  return (
    <div className={styles.Footer}>
-            UnitCommitment.jl: Optimization Package for Security-Constrained Unit Commitment <br/>
+      UnitCommitment.jl: Optimization Package for Security-Constrained Unit
+      Commitment <br />
      Copyright (C) 2020-2025, UChicago Argonne, LLC. All rights reserved.
    </div>
  );
--- a/web/src/components/CaseBuilder/Header/Header.module.css
+++ b/web/src/components/CaseBuilder/Header/Header.module.css
@@ -18,7 +18,8 @@
  min-width: var(--site-min-width);
 }

-.HeaderContent h1, h2 {
+.HeaderContent h1,
+h2 {
  color: var(--contrast-100);
  display: inline-block;
  line-height: 48px;
@@ -38,5 +39,3 @@
  float: right;
  padding: 16px 12px;
 }
-
-
--- a/web/src/components/CaseBuilder/Header/Header.tsx
+++ b/web/src/components/CaseBuilder/Header/Header.tsx
@@ -6,14 +6,14 @@

 import styles from "./Header.module.css";
 import SiteHeaderButton from "../../Common/Buttons/SiteHeaderButton";
-import {UnitCommitmentScenario} from "../../../core/data";
-import {useRef} from "react";
+import { UnitCommitmentScenario } from "../../../core/data";
+import { useRef } from "react";
 import FileUploadElement from "../../Common/Buttons/FileUploadElement";

 interface HeaderProps {
-    onClear: () => void
-    onSave: () => void
-    onLoad: (data: UnitCommitmentScenario) => void
+  onClear: () => void;
+  onSave: () => void;
+  onLoad: (data: UnitCommitmentScenario) => void;
 }

 function Header(props: HeaderProps) {
@@ -32,11 +32,11 @@ function Header(props: HeaderProps) {
        <h1>UnitCommitment.jl</h1>
        <h2>Case Builder</h2>
        <div className={styles.buttonContainer}>
-                    <SiteHeaderButton title="Clear" onClick={props.onClear}/>
-                    <SiteHeaderButton title="Load" onClick={onLoad}/>
-                    <SiteHeaderButton title="Save" onClick={props.onSave}/>
+          <SiteHeaderButton title="Clear" onClick={props.onClear} />
+          <SiteHeaderButton title="Load" onClick={onLoad} />
+          <SiteHeaderButton title="Save" onClick={props.onSave} />
        </div>
-                <FileUploadElement ref={fileElem} accept=".json"/>
+        <FileUploadElement ref={fileElem} accept=".json" />
      </div>
    </div>
  );
--- a/web/src/components/CaseBuilder/Parameters/Parameters.tsx
+++ b/web/src/components/CaseBuilder/Parameters/Parameters.tsx
@@ -7,17 +7,16 @@
 import SectionHeader from "../../Common/SectionHeader/SectionHeader";
 import Form from "../../Common/Forms/Form";
 import TextInputRow from "../../Common/Forms/TextInputRow";
-import {UnitCommitmentScenario} from "../../../core/data";
+import { UnitCommitmentScenario } from "../../../core/data";

 interface ParametersProps {
-    scenario: UnitCommitmentScenario
+  scenario: UnitCommitmentScenario;
 }

-function Parameters({scenario}: ParametersProps) {
+function Parameters({ scenario }: ParametersProps) {
  return (
    <div>
-            <SectionHeader title="Parameters">
-            </SectionHeader>
+      <SectionHeader title="Parameters"></SectionHeader>
      <Form>
        <TextInputRow
          label="Time horizon"
--- a/web/src/components/Common/Buttons/FileUploadElement.tsx
+++ b/web/src/components/Common/Buttons/FileUploadElement.tsx
@@ -4,7 +4,7 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import React, {Component} from "react";
+import React, { Component } from "react";

 class FileUploadElement extends Component<any> {
  private inputRef = React.createRef<HTMLInputElement>();
@@ -25,17 +25,19 @@ class FileUploadElement extends Component<any> {
      };
      reader.readAsText(file);
    }
-        event.target.value = '';
+    event.target.value = "";
  };

  override render() {
-        return <input
+    return (
+      <input
        ref={this.inputRef}
        type="file"
        accept={this.props.accept}
        style={{ display: "none" }}
        onChange={this.onFileSelected}
-        />;
+      />
+    );
  }
 }

--- a/web/src/components/Common/Buttons/HelpButton.tsx
+++ b/web/src/components/Common/Buttons/HelpButton.tsx
@@ -5,16 +5,15 @@
 */

 import styles from "./HelpButton.module.css";
-import {FontAwesomeIcon} from '@fortawesome/react-fontawesome';
-import {faCircleQuestion} from '@fortawesome/free-regular-svg-icons';
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+import { faCircleQuestion } from "@fortawesome/free-regular-svg-icons";

-
-function HelpButton({text}: { text: String }) {
+function HelpButton({ text }: { text: String }) {
  return (
    <button className={styles.HelpButton}>
      <span className={styles.tooltip}>{text}</span>
      <span className={styles.icon}>
-                <FontAwesomeIcon icon={faCircleQuestion}/>
+        <FontAwesomeIcon icon={faCircleQuestion} />
      </span>
    </button>
  );
--- a/web/src/components/Common/Buttons/SectionButton.tsx
+++ b/web/src/components/Common/Buttons/SectionButton.tsx
@@ -4,14 +4,14 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import {IconDefinition} from "@fortawesome/fontawesome-svg-core";
-import {FontAwesomeIcon} from "@fortawesome/react-fontawesome";
+import { IconDefinition } from "@fortawesome/fontawesome-svg-core";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import styles from "./SectionButton.module.css";

 interface SectionButtonProps {
-    icon: IconDefinition,
-    tooltip: string,
-    onClick?: () => void,
+  icon: IconDefinition;
+  tooltip: string;
+  onClick?: () => void;
 }

 function SectionButton(props: SectionButtonProps) {
@@ -21,7 +21,7 @@ function SectionButton(props: SectionButtonProps) {
      title={props.tooltip}
      onClick={props.onClick}
    >
-            <FontAwesomeIcon icon={props.icon}/>
+      <FontAwesomeIcon icon={props.icon} />
    </button>
  );
 }
--- a/web/src/components/Common/Buttons/SiteHeaderButton.tsx
+++ b/web/src/components/Common/Buttons/SiteHeaderButton.tsx
@@ -6,11 +6,15 @@

 import styles from "./SiteHeaderButton.module.css";

-function SiteHeaderButton({title, onClick}: { title: string, onClick?: () => void }) {
+function SiteHeaderButton({
+  title,
+  onClick,
+}: {
+  title: string;
+  onClick?: () => void;
+}) {
  return (
-        <button
-            className={styles.SiteHeaderButton}
-            onClick={onClick}>
+    <button className={styles.SiteHeaderButton} onClick={onClick}>
      {title}
    </button>
  );
--- a/web/src/components/Common/Forms/Form.tsx
+++ b/web/src/components/Common/Forms/Form.tsx
@@ -4,10 +4,10 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import {ReactNode} from 'react';
+import { ReactNode } from "react";
 import styles from "./Form.module.css";

-function Form({children}: { children: ReactNode }) {
+function Form({ children }: { children: ReactNode }) {
  return <div className={styles.Form}>{children}</div>;
 }

--- a/web/src/components/Common/Forms/TextInputRow.tsx
+++ b/web/src/components/Common/Forms/TextInputRow.tsx
@@ -7,12 +7,18 @@
 import formStyles from "./Form.module.css";
 import HelpButton from "../Buttons/HelpButton";

-function TextInputRow({label, unit, tooltip, currentValue, defaultValue}: {
-    label: string,
-    unit: string,
-    tooltip: string,
-    currentValue: string,
-    defaultValue: string,
+function TextInputRow({
+  label,
+  unit,
+  tooltip,
+  currentValue,
+  defaultValue,
+}: {
+  label: string;
+  unit: string;
+  tooltip: string;
+  currentValue: string;
+  defaultValue: string;
 }) {
  return (
    <div className={formStyles.FormRow}>
@@ -20,12 +26,8 @@ function TextInputRow({label, unit, tooltip, currentValue, defaultValue}: {
        {label}
        <span className={formStyles.FormRow_unit}> ({unit})</span>
      </label>
-            <input
-                type="text"
-                placeholder={defaultValue}
-                value={currentValue}
-            />
-            <HelpButton text={tooltip}/>
+      <input type="text" placeholder={defaultValue} value={currentValue} />
+      <HelpButton text={tooltip} />
    </div>
  );
 }
--- a/web/src/components/Common/SectionHeader/SectionHeader.tsx
+++ b/web/src/components/Common/SectionHeader/SectionHeader.tsx
@@ -5,20 +5,17 @@
 */

 import styles from "./SectionHeader.module.css";
-import {ReactNode} from "react";
+import { ReactNode } from "react";

 interface SectionHeaderProps {
-    title: string,
-    children: ReactNode
+  title: string;
+  children?: ReactNode;
 }

-
-function SectionHeader({title, children}: SectionHeaderProps) {
+function SectionHeader({ title, children }: SectionHeaderProps) {
  return (
    <div className={styles.SectionHeader}>
-            <div className={styles.SectionButtonsContainer}>
-                {children}
-            </div>
+      <div className={styles.SectionButtonsContainer}>{children}</div>
      <h1>{title}</h1>
    </div>
  );
--- a/web/src/components/Common/io.ts
+++ b/web/src/components/Common/io.ts
@@ -5,9 +5,9 @@
 */

 export function offerDownload(data: string, type: string, filename: string) {
-    const dataBlob = new Blob([data], {type: type});
+  const dataBlob = new Blob([data], { type: type });
  const url = URL.createObjectURL(dataBlob);
-    const link = document.createElement('a');
+  const link = document.createElement("a");
  link.href = url;
  link.download = filename;
  document.body.appendChild(link);
--- a/web/src/core/Validation/schema.ts
+++ b/web/src/core/Validation/schema.ts
@@ -11,53 +11,53 @@ export const schema = {
    Parameters: {
      type: "object",
      properties: {
-                "Version": {
+        Version: {
          type: "string",
          const: "0.4",
-                    description: "Version of UnitCommitment.jl"
+          description: "Version of UnitCommitment.jl",
        },
        "Time horizon (min)": {
          type: "number",
          exclusiveMinimum: 0,
-                    description: "Length of the planning horizon in minutes"
+          description: "Length of the planning horizon in minutes",
        },
        "Time horizon (h)": {
          type: "number",
          exclusiveMinimum: 0,
-                    description: "Length of the planning horizon in hours"
+          description: "Length of the planning horizon in hours",
        },
        "Time step (min)": {
          type: "number",
          default: 60,
          enum: [60, 30, 20, 15, 12, 10, 6, 5, 4, 3, 2, 1],
-                    description: "Must be a divisor of 60"
+          description: "Must be a divisor of 60",
        },
        "Power balance penalty ($/MW)": {
          type: "number",
          default: 1000.0,
          minimum: 0,
-                    description: "Penalty for system-wide shortage or surplus"
+          description: "Penalty for system-wide shortage or surplus",
        },
        "Scenario name": {
          type: "string",
          default: "s1",
-                    description: "Name of the scenario"
+          description: "Name of the scenario",
        },
        "Scenario weight": {
          type: "number",
          default: 1.0,
          exclusiveMinimum: 0,
-                    description: "Weight of the scenario"
-                }
+          description: "Weight of the scenario",
+        },
      },
      required: ["Time step (min)", "Power balance penalty ($/MW)"],
      oneOf: [
        { required: ["Time horizon (min)"] },
-                { required: ["Time horizon (h)"] }
+        { required: ["Time horizon (h)"] },
      ],
      not: {
-                required: ["Time horizon (min)", "Time horizon (h)"]
-            }
+        required: ["Time horizon (min)", "Time horizon (h)"],
+      },
    },
    Bus: {
      type: "object",
@@ -71,15 +71,12 @@ export const schema = {
              {
                type: "array",
                items: {
-                                    oneOf: [
-                                        { type: "number" },
-                                        { type: "null" }
-                                    ]
-                                }
-                            }
-                        ]
-                    }
-                }
+                  oneOf: [{ type: "number" }, { type: "null" }],
+                },
+              },
+            ],
+          },
+        },
      },
    },
    TransmissionLines: {
@@ -95,36 +92,36 @@ export const schema = {
            type: "string",
            minLength: 1,
            not: {
-                            const: { $data: "1/Source bus" }
-                        }
+              const: { $data: "1/Source bus" },
+            },
          },
          "Susceptance (S)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Normal flow limit (MW)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Emergency flow limit (MW)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Flow limit penalty ($/MW)": {
            type: "number",
            minimum: 0,
-                        default: 5000.0
-                    }
+            default: 5000.0,
+          },
+        },
+        required: ["Source bus", "Target bus", "Susceptance (S)"],
      },
-                required: ["Source bus", "Target bus", "Susceptance (S)"]
-            }
    },
    StorageUnits: {
      type: "object",
      additionalProperties: {
        type: "object",
        properties: {
-                    "Bus": {
+          Bus: {
            type: "string",
            minLength: 1,
          },
@@ -133,65 +130,65 @@ export const schema = {
          },
          "Maximum level (MWh)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Allow simultaneous charging and discharging": {
            type: "boolean",
-                        default: true
+            default: true,
          },
          "Charge cost ($/MW)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Discharge cost ($/MW)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Charge efficiency": {
            type: "number",
            minimum: 0,
-                        maximum: 1
+            maximum: 1,
          },
          "Discharge efficiency": {
            type: "number",
            minimum: 0,
-                        maximum: 1
+            maximum: 1,
          },
          "Loss factor": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Minimum charge rate (MW)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Maximum charge rate (MW)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Minimum discharge rate (MW)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Maximum discharge rate (MW)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Initial level (MWh)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Last period minimum level (MWh)": {
            type: "number",
-                        minimum: 0
+            minimum: 0,
          },
          "Last period maximum level (MWh)": {
            type: "number",
-                        minimum: 0
-                    }
+            minimum: 0,
+          },
+        },
+        required: ["Bus"],
      },
-                required: ["Bus"]
-            }
    },
    Generators: {
      type: "object",
@@ -199,90 +196,90 @@ export const schema = {
        type: "object",
        if: {
          properties: {
-                        "Type": { const: "Thermal" }
-                    }
+            Type: { const: "Thermal" },
+          },
        },
        then: {
          properties: {
-                        "Bus": {
+            Bus: {
              type: "string",
              minLength: 1,
            },
-                        "Type": {
+            Type: {
              type: "string",
-                            const: "Thermal"
+              const: "Thermal",
            },
            "Production cost curve (MW)": {
              type: "array",
              items: {
                type: "number",
-                                minimum: 0
+                minimum: 0,
              },
-                            minItems: 1
+              minItems: 1,
            },
            "Production cost curve ($)": {
              type: "array",
              items: {
                type: "number",
-                                minimum: 0
+                minimum: 0,
              },
-                            minItems: 1
+              minItems: 1,
            },
            "Startup costs ($)": {
              type: "array",
              items: {
                type: "number",
-                                minimum: 0
+                minimum: 0,
              },
-                            default: [0.0]
+              default: [0.0],
            },
            "Startup delays (h)": {
              type: "array",
              items: {
                type: "integer",
-                                minimum: 1
+                minimum: 1,
              },
-                            default: [1]
+              default: [1],
            },
            "Minimum uptime (h)": {
              type: "integer",
              default: 1,
-                            minimum: 0
+              minimum: 0,
            },
            "Minimum downtime (h)": {
              type: "integer",
              default: 1,
-                            minimum: 0
+              minimum: 0,
            },
            "Ramp up limit (MW)": {
              type: "number",
-                            minimum: 0
+              minimum: 0,
            },
            "Ramp down limit (MW)": {
              type: "number",
-                            minimum: 0
+              minimum: 0,
            },
            "Startup limit (MW)": {
              type: "number",
-                            minimum: 0
+              minimum: 0,
            },
            "Shutdown limit (MW)": {
              type: "number",
-                            minimum: 0
+              minimum: 0,
            },
            "Initial status (h)": {
              type: "integer",
              default: 1,
-                            not: { const: 0 }
+              not: { const: 0 },
            },
            "Initial power (MW)": {
              type: "number",
-                            minimum: 0
+              minimum: 0,
            },
            "Must run?": {
              type: "boolean",
-                            default: false
-                        }
+              default: false,
+            },
          },
          required: [
            "Bus",
@@ -290,13 +287,13 @@ export const schema = {
            "Production cost curve (MW)",
            "Production cost curve ($)",
            "Initial status (h)",
-                        "Initial power (MW)"
-                    ]
+            "Initial power (MW)",
+          ],
        },
        else: {
          properties: {
-                        "Type": { const: "Profiled" },
-                        "Bus": {
+            Type: { const: "Profiled" },
+            Bus: {
              type: "string",
              minLength: 1,
            },
@@ -309,19 +306,18 @@ export const schema = {
                  type: "array",
                  items: {
                    type: "number",
-                                    }
-                                }
-                            ]
+                  },
+                },
+              ],
            },
            "Cost ($/MW)": {
              type: "number",
-                            minimum: 0
-                        }
+              minimum: 0,
+            },
+          },
+          required: ["Type", "Bus", "Maximum power (MW)", "Cost ($/MW)"],
+        },
      },
-                    required: ["Type", "Bus", "Maximum power (MW)", "Cost ($/MW)"]
-
-                }
-            }
    },
    Contingencies: {
      type: "object",
@@ -331,36 +327,36 @@ export const schema = {
          "Affected lines": {
            type: "array",
            items: {
-                            type: "string"
+              type: "string",
            },
            maxItems: 1,
-                        minItems: 1
-                    }
+            minItems: 1,
+          },
+        },
+        required: ["Affected lines"],
+      },
    },
-                required: ["Affected lines"]
-            }
-        }
  },
  type: "object",
  properties: {
    Parameters: {
-            $ref: "#/definitions/Parameters"
+      $ref: "#/definitions/Parameters",
    },
    Buses: {
-            $ref: "#/definitions/Bus"
+      $ref: "#/definitions/Bus",
    },
    "Transmission lines": {
-            $ref: "#/definitions/TransmissionLines"
+      $ref: "#/definitions/TransmissionLines",
    },
    "Storage units": {
-            $ref: "#/definitions/StorageUnits"
+      $ref: "#/definitions/StorageUnits",
    },
-        "Generators": {
-            $ref: "#/definitions/Generators"
+    Generators: {
+      $ref: "#/definitions/Generators",
+    },
+    Contingencies: {
+      $ref: "#/definitions/Contingencies",
    },
-        "Contingencies": {
-            $ref: "#/definitions/Contingencies"
-        }
  },
  required: ["Parameters"],
 };
--- a/web/src/core/Validation/validate.ts
+++ b/web/src/core/Validation/validate.ts
@@ -4,7 +4,7 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import { schema } from './schema';
+import { schema } from "./schema";
 import Ajv from "ajv";

 // Create Ajv instance with detailed debug options
@@ -14,4 +14,8 @@ const ajv = new Ajv({
  $data: true,
 });

+export interface ValidationError {
+  message: string;
+}
+
 export const validate = ajv.compile(schema);
--- a/web/src/core/data.tsx
+++ b/web/src/core/data.tsx
@@ -10,191 +10,71 @@ export interface Buses {

 export interface UnitCommitmentScenario {
  Parameters: {
-        Version: string,
-        "Power balance penalty ($/MW)": number,
-        "Time horizon (h)": number,
-        "Time step (min)": number,
-    },
-    Buses: Buses
+    Version: string;
+    "Power balance penalty ($/MW)": number;
+    "Time horizon (h)": number;
+    "Time step (min)": number;
+  };
+  Buses: Buses;
 }

 export const BLANK_SCENARIO: UnitCommitmentScenario = {
-    "Parameters": {
-        "Version": "0.4",
+  Parameters: {
+    Version: "0.4",
    "Power balance penalty ($/MW)": 1000.0,
    "Time horizon (h)": 24,
    "Time step (min)": 60,
  },
-    "Buses": {}
+  Buses: {},
 };

 export const TEST_SCENARIO: UnitCommitmentScenario = {
-    "Parameters": {
-        "Version": "0.4",
+  Parameters: {
+    Version: "0.4",
    "Power balance penalty ($/MW)": 1000.0,
    "Time horizon (h)": 36,
    "Time step (min)": 60,
  },
-    "Buses": {
-        "b1": {
+  Buses: {
+    b1: {
      "Load (MW)": [
-                35.79534,
-                34.38835,
-                33.45083,
-                32.89729,
-                33.25044,
-                33.93851,
-                35.8654,
-                37.27098,
-                38.08378,
-                38.99327,
-                38.65134,
-                38.83212,
-                37.60031,
-                37.27939,
-                37.11823,
-                37.73063,
-                40.951,
-                44.77115,
-                43.67527,
-                44.40959,
-                44.33812,
-                42.29071,
-                40.07654,
-                37.42093,
-                35.61175,
-                34.28185,
-                32.74174,
-                33.17336,
-                33.5181,
-                35.63558,
-                38.12722,
-                39.61689,
-                40.80105,
-                42.55277,
-                42.76017,
-                42.12535
-            ]
+        35.79534, 34.38835, 33.45083, 32.89729, 33.25044, 33.93851, 35.8654,
+        37.27098, 38.08378, 38.99327, 38.65134, 38.83212, 37.60031, 37.27939,
+        37.11823, 37.73063, 40.951, 44.77115, 43.67527, 44.40959, 44.33812,
+        42.29071, 40.07654, 37.42093, 35.61175, 34.28185, 32.74174, 33.17336,
+        33.5181, 35.63558, 38.12722, 39.61689, 40.80105, 42.55277, 42.76017,
+        42.12535,
+      ],
    },
-        "b2": {
+    b2: {
      "Load (MW)": [
-                14.03739,
-                13.48563,
-                13.11797,
-                12.9009,
-                13.03939,
-                13.30922,
-                14.06486,
-                14.61607,
-                14.93482,
-                15.29148,
-                15.15739,
-                15.22828,
-                14.74522,
-                14.61937,
-                14.55617,
-                14.79633,
-                16.05921,
-                17.55731,
-                17.12756,
-                17.41553,
-                17.3875,
-                16.58459,
-                15.71629,
-                14.67487,
-                13.96539,
-                13.44386,
-                12.8399,
-                13.00916,
-                13.14435,
-                13.97474,
-                14.95185,
-                15.53603,
-                16.00041,
-                16.68736,
-                16.76869,
-                16.51974
-            ]
+        14.03739, 13.48563, 13.11797, 12.9009, 13.03939, 13.30922, 14.06486,
+        14.61607, 14.93482, 15.29148, 15.15739, 15.22828, 14.74522, 14.61937,
+        14.55617, 14.79633, 16.05921, 17.55731, 17.12756, 17.41553, 17.3875,
+        16.58459, 15.71629, 14.67487, 13.96539, 13.44386, 12.8399, 13.00916,
+        13.14435, 13.97474, 14.95185, 15.53603, 16.00041, 16.68736, 16.76869,
+        16.51974,
+      ],
    },
-        "b3": {
+    b3: {
      "Load (MW)": [
-                27.3729,
-                26.29698,
-                25.58005,
-                25.15675,
-                25.4268,
-                25.95298,
-                27.42649,
-                28.50134,
-                29.12289,
-                29.81839,
-                29.55691,
-                29.69515,
-                28.75318,
-                28.50777,
-                28.38453,
-                28.85284,
-                31.31547,
-                34.23676,
-                33.39874,
-                33.96028,
-                33.90562,
-                32.33996,
-                30.64676,
-                28.61601,
-                27.23252,
-                26.21553,
-                25.0378,
-                25.36786,
-                25.63149,
-                27.25074,
-                29.15611,
-                30.29527,
-                31.2008,
-                32.54035,
-                32.69895,
-                32.2135
-            ]
+        27.3729, 26.29698, 25.58005, 25.15675, 25.4268, 25.95298, 27.42649,
+        28.50134, 29.12289, 29.81839, 29.55691, 29.69515, 28.75318, 28.50777,
+        28.38453, 28.85284, 31.31547, 34.23676, 33.39874, 33.96028, 33.90562,
+        32.33996, 30.64676, 28.61601, 27.23252, 26.21553, 25.0378, 25.36786,
+        25.63149, 27.25074, 29.15611, 30.29527, 31.2008, 32.54035, 32.69895,
+        32.2135,
+      ],
    },
-        "b4": {
+    b4: {
      "Load (MW)": [
-                27.3729,
-                26.29698,
-                25.58005,
-                25.15675,
-                25.4268,
-                25.95298,
-                27.42649,
-                28.50134,
-                29.12289,
-                29.81839,
-                29.55691,
-                29.69515,
-                28.75318,
-                28.50777,
-                28.38453,
-                28.85284,
-                31.31547,
-                34.23676,
-                33.39874,
-                33.96028,
-                33.90562,
-                32.33996,
-                30.64676,
-                28.61601,
-                27.23252,
-                26.21553,
-                25.0378,
-                25.36786,
-                25.63149,
-                27.25074,
-                29.15611,
-                30.29527,
-                31.2008,
-                32.54035,
-                32.69895,
-                32.2135
-            ]
+        27.3729, 26.29698, 25.58005, 25.15675, 25.4268, 25.95298, 27.42649,
+        28.50134, 29.12289, 29.81839, 29.55691, 29.69515, 28.75318, 28.50777,
+        28.38453, 28.85284, 31.31547, 34.23676, 33.39874, 33.96028, 33.90562,
+        32.33996, 30.64676, 28.61601, 27.23252, 26.21553, 25.0378, 25.36786,
+        25.63149, 27.25074, 29.15611, 30.29527, 31.2008, 32.54035, 32.69895,
+        32.2135,
+      ],
+    },
  },
-    }
 };
--- a/web/src/index.tsx
+++ b/web/src/index.tsx
@@ -4,19 +4,19 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import React from 'react';
-import ReactDOM from 'react-dom/client';
-import reportWebVitals from './reportWebVitals';
+import React from "react";
+import ReactDOM from "react-dom/client";
+import reportWebVitals from "./reportWebVitals";
 import CaseBuilder from "./components/CaseBuilder/CaseBuilder";

 const root = ReactDOM.createRoot(
-    document.getElementById('root') as HTMLElement
+  document.getElementById("root") as HTMLElement,
 );

 root.render(
  <React.StrictMode>
-        <CaseBuilder/>
-    </React.StrictMode>
+    <CaseBuilder />
+  </React.StrictMode>,
 );

 reportWebVitals();
--- a/web/src/reportWebVitals.ts
+++ b/web/src/reportWebVitals.ts
@@ -4,11 +4,11 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import {ReportHandler} from 'web-vitals';
+import { ReportHandler } from "web-vitals";

 const reportWebVitals = (onPerfEntry?: ReportHandler) => {
  if (onPerfEntry && onPerfEntry instanceof Function) {
-        import('web-vitals').then(({getCLS, getFID, getFCP, getLCP, getTTFB}) => {
+    import("web-vitals").then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
      getCLS(onPerfEntry);
      getFID(onPerfEntry);
      getFCP(onPerfEntry);
--- a/web/src/setupTests.ts
+++ b/web/src/setupTests.ts
@@ -4,4 +4,4 @@
 * Released under the modified BSD license. See COPYING.md for more details.
 */

-import '@testing-library/jest-dom';
+import "@testing-library/jest-dom";
--- a/web/tsconfig.json
+++ b/web/tsconfig.json
@@ -1,11 +1,7 @@
 {
  "compilerOptions": {
    "target": "es5",
-    "lib": [
-      "dom",
-      "dom.iterable",
-      "esnext"
-    ],
+    "lib": ["dom", "dom.iterable", "esnext"],
    "allowJs": false,
    "allowSyntheticDefaultImports": true,
    "alwaysStrict": true,
@@ -35,7 +31,5 @@
    "noUnusedParameters": false,
    "checkJs": true
  },
-  "include": [
-    "src"
-  ]
+  "include": ["src"]
 }