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+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import Chart from 'chart.js/auto';
+import 'chartjs-adapter-date-fns';
+
+const colors = {
+    red: 'rgb(255, 45, 70)',
+    green: 'rgb(75, 192, 35)',
+    white: 'rgb(249, 246, 238)',
+    blue: 'rgb(137, 207, 240)',
+    fadedBlue: 'rgb(137, 207, 240, 0.25)',
+    purple: 'rgb(203, 195, 227)',
+    brown: 'rgb(205, 127, 50)',
+    black: 'rgb(53, 57, 53)',
+};
+
+const months = [
+    'January',
+    'February',
+    'March',
+    'April',
+    'May',
+    'June',
+    'July',
+    'August',
+    'September',
+    'October',
+    'November',
+    'December',
+];
+
+function getWeek(x) {
+    const dowOffset = 0;
+    const newYear = new Dte(x.getFullYear(), 0, 1);
+    let day = newYear.getDay() - dowOffset; //the day of week the year begins on
+    day = (day >= 0 ? day : day + 7);
+    const daynum = Math.floor((x.getTime() - newYear.getTime() -
+        (x.getTimezoneOffset() - newYear.getTimezoneOffset()) * 60000) / 86400000) + 1;
+    let weeknum;
+
+    //if the year starts before the middle of a week
+    if (day < 4) {
+        weeknum = Math.floor((daynum + day - 1) / 7) + 1;
+        if (weeknum > 52) {
+            const nYear = new Date(x.getFullYear() + 1, 0, 1);
+            let nday = nYear.getDay() - dowOffset;
+            nday = nday >= 0 ? nday : nday + 7;
+            /*if the next year starts before the middle of
+              the week, it is week #1 of that year*/
+            weeknum = nday < 4 ? 1 : 53;
+        }
+    }
+    else {
+        weeknum = Math.floor((daynum + day - 1) / 7);
+    }
+    return weeknum;
+}
+
+// Convert a sorting expressions (e.g. "Outflow DESC; Date ASC; Category ASC")
+// into a function that can be passed to Array.prototype.sort.
+function compileSort(expr) {
+    return expr.split(/\s*;\s*/).reverse().reduce((acc, x) => {
+        const [k, dir] = x.split(/\s+/);
+        if (dir === 'ASC') {
+            return function(x, y) {
+                if (x[k] > y[k]) { return 1; }
+                if (x[k] < y[k]) { return -1; }
+                else { return acc(x, y); }
+            };
+        }
+        if (dir === 'DESC') {
+            return function(x, y) {
+                if (x[k] > y[k]) { return -1; }
+                if (x[k] < y[k]) { return 1; }
+                else { return acc(x, y); }
+            };
+        }
+        else {
+            throw new Error(`Sort direction not supported, ${dir}, must be either "ASC" or "DESC"`);
+        }
+    }, function(x, y) { return 0; })
+}
+
+function dollars(n, sensitive) {
+    if (sensitive) {
+        const order = magnitude(n);
+        // Shortcut to avoid writing comma-insertion logic v0v.
+        if (n === 0) {
+            return '$X.XX';
+        }
+        if (order <= 0) {
+            return '$X.XX';
+        }
+        if (order === 1) {
+            return '$XX.XX';
+        }
+        if (order === 2) {
+            return '$XXX.XX';
+        }
+        if (order === 3) {
+            return '$X,XXX.XX';
+        }
+        if (order === 4) {
+            return '$XX,XXX.XX';
+        }
+        if (order === 4) {
+            return '$XX,XXX.XX';
+        }
+        if (order === 5) {
+            return '$XXX,XXX.XX';
+        }
+        // Coming soon! :P
+        if (order === 6) {
+            return '$X,XXX,XXX.XX';
+        }
+        if (order === 7) {
+            return '$XX,XXX,XXX.XX';
+        }
+        if (order === 8) {
+            return '$XXX,XXX,XXX.XX';
+        }
+        // Unsupported
+        else {
+            return '$???.??';
+        }
+    }
+    return usd.format(n);
+}
+
+const usd = new Intl.NumberFormat('en-US', {
+    style: 'currency',
+    currency: 'USD',
+});
+
+const queries = {
+    housing: 'Category:/(rent|electric)/',
+    food: 'Category:/(eating|alcohol|grocer)/',
+    commute: 'Category:/(vacation|gasoline|parking|car maintenance)/',
+};
+
+/**
+ * Return the Order of Magnitude of some value, x.
+ */
+function magnitude(x) {
+    return Math.floor(Math.log(x) / Math.LN10 + 0.000000001);
+}
+
+function getSum(transactions) {
+    return transactions.reduce((acc, x) => acc + x.Outflow, 0);
+}
+
+function transactionKey(x) {
+    const keys = [
+        'Account',
+        'Flag',
+        'Date',
+        'Payee',
+        'Category',
+        'Memo',
+        'Outflow',
+        'Inflow',
+        'Cleared',
+    ];
+    return keys.map(k => x[k]).join('|');
+}
+
+function parseCSV(csv) {
+  let lines=csv.split("\n");
+  let result = [];
+
+  // Strip the surrounding 2x-quotes from the header.
+  //
+  // NOTE: If your columns contain commas in their values, you'll need
+  // to deal with those before doing the next step
+  let headers = lines[0].split(",").map(x => x.slice(1, -1));
+
+  for(let i = 1; i < lines.length; i += 1) {
+      let obj = {};
+      let currentline=lines[i].split(",");
+
+      for(let j = 0; j < headers.length; j += 1) {
+        obj[headers[j]] = currentline[j].slice(1, -1);
+      }
+
+      result.push(obj);
+  }
+
+  return result.map(x => ({
+    ...x,
+    Date: new Date(x.Date),
+    Inflow: parseFloat(x.Inflow),
+    Outflow: parseFloat(x.Outflow),
+  }));
+}
+
+
+class UploadJSON extends React.Component {
+    handleUpload(e) {
+        let files = e.target.files;
+        if (!files.length) {
+            alert('No file selected!');
+            return;
+        }
+        let file = files[0];
+        let reader = new FileReader();
+        reader.onload = (event) => {
+            this.props.onUpload(parseCSV(event.target.result));
+        };
+        reader.readAsText(file);
+    }
+    render() {
+        return <input onChange={e => this.handleUpload(e)} id="json-upload" type="file" accept="application/csv" />;
+    }
+}
+
+class ScatterChart extends React.Component {
+    constructor(props) {
+        super(props);
+        this.chart = null;
+        // Generate a 1/1M random ID.
+        this.id = btoa(Math.floor(Math.random() * 1e9));
+    }
+    componentDidUpdate(prevProps) {
+        if (this.props.transactions !== prevProps.transactions) {
+            this.chart.data.datasets[0].data = this.props.transactions.filter(x => x.Inflow > 0).map(x => ({
+                x: x.Date,
+                y: x.Inflow,
+                metadata: x,
+            }));
+            this.chart.data.datasets[1].data = this.props.transactions.filter(x => x.Outflow > 0).map(x => ({
+                x: x.Date,
+                y: x.Outflow,
+                metadata: x,
+            }));
+            this.chart.update();
+        }
+    }
+    componentDidMount() {
+        const mount = document.getElementById(this.id);
+        this.chart = new Chart(mount, {
+            type: 'scatter',
+            data: {
+                datasets: [
+                    {
+                        label: 'Revenue',
+                        data: this.props.transactions.filter(x => x.Inflow > 0).map(x => ({
+                            x: x.Date,
+                            y: x.Inflow,
+                            metadata: x,
+                        })),
+                        backgroundColor: colors.green,
+                    },
+                    {
+                        label: 'Expenses',
+                        data: this.props.transactions.filter(x => x.Outflow).map(x => ({
+                            x: x.Date,
+                            y: x.Outflow,
+                            metadata: x,
+                        })),
+                        backgroundColor: colors.red,
+                    },
+                ],
+            },
+            options: {
+                scales: {
+                    x: {
+                        type: 'time',
+                        title: {
+                            display: true,
+                            text: 'Date',
+                        },
+                    },
+                    y: {
+                        title: {
+                            display: true,
+                            text: 'Amount ($USD)'
+                        },
+                    },
+                },
+                plugins: {
+                    tooltip: {
+                        callbacks: {
+                            title: function (x) {
+                                return `$${x[0].raw.y} (${x[0].raw.metadata.Date.toLocaleDateString()})`;
+                            },
+                            label: function (x) {
+                                const { Category, Payee, Memo } = x.raw.metadata;
+                                return `${Payee} - ${Category} (${Memo})`;
+                            },
+                        },
+                    },
+                },
+            },
+        });
+    }
+    render() {
+        return <canvas id={this.id}></canvas>;
+    }
+}
+
+/**
+ * Generic line chart parameterized by:
+ * - datasets: forwarded to chart.js library
+ * - x: string label for x-axis
+ * - y: string label for y-axis
+ */
+class GenLineChart extends React.Component {
+    constructor(props) {
+        super(props);
+        this.chart = null;
+        // Generate a 1/1M random ID.
+        this.id = btoa(Math.floor(Math.random() * 1e9));
+    }
+
+    componentDidUpdate(prevProps, prevState) {
+        if (this.props.datasets != prevProps.datasets) {
+            this.chart.data.datasets = this.props.datasets;
+            this.chart.update();
+        }
+    }
+
+    componentDidMount() {
+        const mount = document.getElementById(this.id);
+        this.chart = new Chart(mount, {
+            type: 'line',
+            data: {
+                datasets: this.props.datasets,
+            },
+            options: {
+                scales: {
+                    x: {
+                        type: 'time',
+                        title: {
+                            display: true,
+                            text: this.props.x,
+                        },
+                    },
+                    y: {
+                        title: {
+                            display: true,
+                            text: this.props.y
+                        },
+                    },
+                },
+            },
+        });
+    }
+
+    render() {
+        return <canvas id={this.id}></canvas>;
+    }
+}
+
+class DonutChart extends React.Component {
+    constructor(props) {
+        super(props);
+        this.chart = null;
+        // Generate a 1/1M random ID.
+        this.id = btoa(Math.floor(Math.random() * 1e9));
+    }
+
+    componentDidUpdate(prevProps, prevState) {
+        if (this.props.datasets != prevProps.datasets) {
+            this.chart.data.datasets = this.props.datasets;
+            this.chart.update();
+        }
+    }
+
+    componentDidMount() {
+        const mount = document.getElementById(this.id);
+        this.chart = new Chart(mount, {
+            type: 'doughnut',
+            data: {
+                labels: this.props.labels,
+                datasets: this.props.datasets,
+            },
+            options: {
+                resonsive: true,
+            },
+        });
+    }
+
+    render() {
+        return <canvas id={this.id}></canvas>;
+    }
+}
+
+class StackedHistogram extends React.Component {
+    constructor(props) {
+        super(props);
+        this.chart = null;
+        // Generate a 1/1M random ID.
+        this.id = btoa(Math.floor(Math.random() * 1e9));
+    }
+
+    componentDidUpdate(prevProps, prevState) {
+        if (this.props.datasets != prevProps.datasets) {
+            this.chart.data.datasets = this.props.datasets;
+            this.chart.update();
+        }
+    }
+
+    componentDidMount() {
+        const mount = document.getElementById(this.id);
+        this.chart = new Chart(mount, {
+            type: 'bar',
+            data: {
+                labels: this.props.labels,
+                datasets: this.props.datasets,
+            },
+            options: {
+                scales: {
+                    x: {
+                        stacked: true,
+                    },
+                    y: {
+                        stacked: true,
+                    },
+                },
+            },
+        });
+    }
+
+    render() {
+        return <canvas id={this.id}></canvas>;
+    }
+}
+
+/**
+ * Display the "Actual Savings Rate" (bucketed by month) as a line chart with
+ * the "Expected Savings Rate" overlay.
+ */
+class SavingsRateLineChart extends React.Component {
+    constructor(props) {
+        super(props);
+        this.chart = null;
+        // Generate a 1/1M random ID.
+        this.id = btoa(Math.floor(Math.random() * 1e9));
+    }
+
+    static getRevenue(transactions) {
+        // Bucket revenues into months.
+        return transactions.reduce((acc, x) => {
+            const month = x.Date.getMonth();
+            acc[month] += x.Inflow;
+            return acc;
+        }, new Array(12).fill(0));
+    }
+
+    static getExpenses(transactions) {
+        // Bucket revenues into months.
+        return transactions.reduce((acc, x) => {
+            const month = x.Date.getMonth();
+            acc[month] += x.Outflow;
+            return acc;
+        }, new Array(12).fill(0));
+    }
+
+    componentDidMount() {
+        const mount = document.getElementById(this.id);
+        const revenue = SavingsRateLineChart.getRevenue(this.props.transactions);
+        const expenses = SavingsRateLineChart.getExpenses(this.props.transactions);
+
+        this.chart = new Chart(mount, {
+            type: 'line',
+            data: {
+                datasets: [
+                    {
+                        label: 'actual savings (by month)',
+                        data: new Array(12).fill(null).map((_, i) => ({
+                            x: i,
+                            y: (revenue[i] - expenses[i]) / revenue[i],
+                        })),
+                        cubicInterpolationMode: 'monotone',
+                        tension: 0.4,
+                        borderColor: colors.fadedBlue,
+                        backgroundColor: colors.fadedBlue,
+                    },
+                    {
+                        label: 'actual savings (overall)',
+                        data: new Array(12).fill(null).map((_, i) => ({
+                            x: i,
+                            y: this.props.rate,
+                        })),
+                        cubicInterpolationMode: 'monotone',
+                        tension: 0.4,
+                        borderColor: colors.blue,
+                        backgroundColor: colors.blue,
+                    },
+                    // 0% marker (out of debt)
+                    {
+                        label: 'beginner (0%)',
+                        data: new Array(12).fill(null).map((x, i) => ({
+                            x: i,
+                            y: 0.00,
+                        })),
+                        cubicInterpolationMode: 'monotone',
+                        tension: 0.4,
+                        borderColor: colors.white,
+                        backgroundColor: colors.white,
+                    },
+                    // 25% marker (quarter "Washington" club)
+                    {
+                        label: 'healthy (25%)',
+                        data: new Array(12).fill(null).map((x, i) => ({
+                            x: i,
+                            y: 0.25,
+                        })),
+                        cubicInterpolationMode: 'monotone',
+                        tension: 0.4,
+                        borderColor: colors.purple,
+                        backgroundColor: colors.purple,
+                    },
+                    // 50% marker (1/2-dollar "Kennedy" club)
+                    {
+                        label: 'rich (50%)',
+                        data: new Array(12).fill(null).map((x, i) => ({
+                            x: i,
+                            y: 0.50,
+                        })),
+                        cubicInterpolationMode: 'monotone',
+                        tension: 0.4,
+                        borderColor: colors.brown,
+                        backgroundColor: colors.brown,
+                    },
+                    // 75% marker
+                    {
+                        label: 'wealthy (75%)',
+                        data: new Array(12).fill(null).map((x, i) => ({
+                            x: i,
+                            y: 0.75,
+                        })),
+                        cubicInterpolationMode: 'monotone',
+                        tension: 0.4,
+                        borderColor: colors.black,
+                        backgroundColor: colors.black,
+                    },
+                ],
+                labels: months,
+            },
+            options: {
+                scales: {
+                    y: {
+                        max: 1.0,
+                        min: -1.0,
+                        title: {
+                            display: true,
+                            text: 'Savings Rate (%)'
+                        },
+                    },
+                },
+            },
+        });
+    }
+
+    componentDidUpdate(prevProps, prevState) {
+        // Bucket revenues into months.
+        const revenue = SavingsRateLineChart.getRevenue(this.props.transactions);
+        const expenses = SavingsRateLineChart.getExpenses(this.props.transactions);
+
+        this.chart.data.datasets[0].data = new Array(12).fill(null).map((_, i) => ({
+            x: i,
+            y: (revenue[i] - expenses[i]) / revenue[i],
+        }));
+        this.chart.update();
+    }
+
+    render() {
+        return <canvas id={this.id}></canvas>;
+    }
+}
+
+class App extends React.Component {
+    constructor(props) {
+        super(props);
+        const query = 'Account:/checking/';
+        const allTransactions = [];
+        const savingsView = 'after:"01/01/2022"';
+        const inflowQuery = 'Account:/checking/';
+        const outflowQuery = 'Account:/checking/ -Category:/(stocks|crypto)/';
+
+        // slx configuration
+        const slxCaseSensitive = false;
+        const slxPreferRegex = true;
+        const slxDateKey = 'Date';
+
+        this.state = {
+            query,
+            transactionsView: 'table',
+            sensitive: false,
+            allTransactions,
+            slxCaseSensitive,
+            slxPreferRegex,
+            slxDateKey,
+            filteredTransactions: select(query, allTransactions, {
+                caseSensitive: slxCaseSensitive,
+                preferRegex: slxPreferRegex,
+                dateKey: slxDateKey,
+            }),
+            saved: {},
+            focus: {
+                sum: false,
+                1000: false,
+                100: false,
+                10: false,
+                1: false,
+                0.1: false,
+            },
+            budget: [
+                {
+                    label: 'Flexible',
+                    children: [
+                        { label: 'groceries - $200/mo', savings: false, monthly: 400.00 },
+                        { label: 'eating out - $150/mo', savings: false, monthly: 200.00 },
+                        { label: 'alcohol - $200/mo', savings: false, monthly: 200.00 },
+                        { label: 'household items - $50/mo', savings: false, monthly: 50.00 },
+                        { label: 'toiletries - $200/yr', savings: false, monthly: 200.00 / 12 },
+                        { label: 'haircuts - $400/yr', savings: false, monthly: 400.00 / 12 },
+                        { label: 'gasoline - $100/mo', savings: false, monthly: 100.00 },
+                        { label: 'parking - $10/mo', savings: false, monthly: 10.00 },
+                        { label: 'ride services - $25/mo', savings: false, monthly: 50.00 },
+                        { label: 'LMNT - $45/mo', savings: false, monthly: 45.00 },
+                        { label: 'books - $25/mo', savings: false, monthly: 25.00 },
+                        { label: 'vacation - $4,000/yr', savings: false, monthly: 4000.00 / 12 },
+                        { label: 'reimbursements - $5,000 balance', savings: false, monthly: 0.00 },
+                    ],
+                },
+                {
+                    label: 'Fixed',
+                    children: [
+                        { label: 'rent - $3,100/mo', savings: false, monthly: 3100.00 },
+                        { label: 'electric - $50/mo', savings: false, monthly: 50.00 },
+                        { label: 'SoCalGas - $30/mo', savings: false, monthly: 30.00 },
+                        { label: 'YNAB', savings: false, monthly: 100.00 / 12 },
+                        { label: 'Robinhood Gold', savings: false, monthly: 5.00 },
+                        { label: 'Spotify', savings: false, monthly: 10.00 },
+                        { label: 'Surfline', savings: false, monthly: 100.00 / 12 },
+                        { label: 'HBO Max', savings: false, monthly: 170.00 },
+                        { label: 'Clear', savings: false, monthly: 179.00 },
+                        { label: 'car insurance', savings: false, monthly: 100.00 },
+                        { label: 'Making Sense', savings: false, monthly: 50.00 / 12 },
+                        { label: 'internet', savings: false, monthly: 100.00 },
+                        { label: 'tax return', savings: false, monthly: 200.00 / 12 },
+                    ],
+                },
+                {
+                    label: 'Rainy Day (dont touch)',
+                    children: [
+                        { label: 'emergency fund', savings: false, monthly: 0.00 },
+                        { label: 'check-ups', savings: false, monthly: 7.50 },
+                        { label: 'car maintenance', savings: false, monthly: 98.33 },
+                    ],
+                },
+                {
+                    label: 'Savings (dont touch)',
+                    children: [
+                        { label: 'stocks', savings: true, monthly: 4000.00 },
+                        { label: 'crypto', savings: true, monthly: 736.00 },
+                    ],
+                },
+                {
+                    label: 'Gifts (dont touch)',
+                    children: [
+                        { label: 'birthdays', savings: false, monthly: 250.00 / 12 },
+                        { label: 'Valentines Day', savings: false, monthly: 100.00 / 12 },
+                        { label: 'Mothers Day', savings: false, monthly: 25.00 / 12 },
+                        { label: 'Fathers Day', savings: false, monthly: 25.00 / 12 },
+                        { label: 'Christmas', savings: false, monthly: 500.00 / 12 },
+                    ],
+                },
+                {
+                    label: 'Error Budget',
+                    children: [
+                        { label: 'stuff I forgot to budget for - $2,254/mo', savings: false, monthly: 0.00 },
+                    ],
+                },
+            ],
+            paycheck: 6000.00,
+            view: 'query',
+            savingsView,
+            inflowQuery,
+            outflowQuery,
+            inflowTransactions: select(inflowQuery, select(savingsView, allTransactions, {
+                caseSensitive: slxCaseSensitive,
+                preferRegex: slxPreferRegex,
+                dateKey: slxDateKey,
+            }), {
+                caseSensitive: slxCaseSensitive,
+                preferRegex: slxPreferRegex,
+                dateKey: slxDateKey,
+            }),
+            outflowTransactions: select(outflowQuery, select(savingsView, allTransactions, {
+                caseSensitive: slxCaseSensitive,
+                preferRegex: slxPreferRegex,
+                dateKey: slxDateKey,
+            }), {
+                caseSensitive: slxCaseSensitive,
+                preferRegex: slxPreferRegex,
+                dateKey: slxDateKey,
+            }),
+            sortExpr: 'Date DESC; Outflow DESC',
+        };
+    }
+
+    render() {
+        const sum = this.state.filteredTransactions.reduce((acc, { Outflow }) => acc + Outflow, 0);
+        const savedSum = Object.values(this.state.saved).reduce((acc, sum) => acc + sum, 0);
+        const categories = this.state.allTransactions.reduce((acc, x) => {
+            if (!(x.Category in acc)) {
+                acc[x.Category] = [];
+            }
+            acc[x.Category].push(x);
+            return acc;
+        }, {});
+
+        let view = null;
+        if (this.state.view === 'query') {
+            view = (
+                <QueryView
+                    transactionsView={this.state.transactionsView}
+                    sortExpr={this.state.sortExpr}
+                    onSortExprChange={sortExpr => this.setState({ sortExpr })}
+                    sensitive={this.state.sensitive}
+                    query={this.state.query}
+                    focus={this.state.focus}
+                    allTransactions={this.state.allTransactions}
+                    transactions={this.state.filteredTransactions}
+                    saved={this.state.saved}
+                    setState={this.setState.bind(this)}
+                    slxConfig={{
+                        caseSensitive: this.state.slxCaseSensitive,
+                        preferRegex: this.state.slxPreferRegex,
+                        dateKey: this.state.slxDateKey,
+                    }}
+                />
+            );
+        } else if (this.state.view === 'savings') {
+            view = (
+                <SavingsView
+                    categories={categories}
+                    sensitive={this.state.sensitive}
+                    savingsView={this.state.savingsView}
+                    inflowQuery={this.state.inflowQuery}
+                    outflowQuery={this.state.outflowQuery}
+                    inflowTransactions={this.state.inflowTransactions}
+                    outflowTransactions={this.state.outflowTransactions}
+                    onFilterInflow={() => this.setState({
+                        inflowTransactions: select(this.state.inflowQuery, select(this.state.savingsView, this.state.allTransactions, {
+                            caseSensitive: this.state.slxCaseSensitive,
+                            preferRegex: this.state.slxPreferRegex,
+                            dateKey: this.state.slxDateKey,
+                        }), {
+                            caseSensitive: this.state.slxCaseSensitive,
+                            preferRegex: this.state.slxPreferRegex,
+                            dateKey: this.state.slxDateKey,
+                        }),
+                    })}
+                    onFilterOutflow={() => this.setState({
+                        outflowTransactions: select(this.state.outflowQuery, select(this.state.savingsView, this.state.allTransactions, {
+                            caseSensitive: this.state.slxCaseSensitive,
+                            preferRegex: this.state.slxPreferRegex,
+                            dateKey: this.state.slxDateKey,
+                        }), {
+                            caseSensitive: this.state.slxCaseSensitive,
+                            preferRegex: this.state.slxPreferRegex,
+                            dateKey: this.state.slxDateKey,
+                        }),
+                    })}
+                    onFilterSavingsView={() => this.setState({
+                        inflowTransactions: select(this.state.inflowQuery, select(this.state.savingsView, this.state.allTransactions, {
+                            caseSensitive: this.state.slxCaseSensitive,
+                            preferRegex: this.state.slxPreferRegex,
+                            dateKey: this.state.slxDateKey,
+                        }), {
+                            caseSensitive: this.state.slxCaseSensitive,
+                            preferRegex: this.state.slxPreferRegex,
+                            dateKey: this.state.slxDateKey,
+                        }),
+                        outflowTransactions: select(this.state.outflowQuery, select(this.state.savingsView, this.state.allTransactions, {
+                            caseSensitive: this.state.slxCaseSensitive,
+                            preferRegex: this.state.slxPreferRegex,
+                            dateKey: this.state.slxDateKey,
+                        }), {
+                            caseSensitive: this.state.slxCaseSensitive,
+                            preferRegex: this.state.slxPreferRegex,
+                            dateKey: this.state.slxDateKey,
+                        }),
+                    })}
+                    onSavingsViewChange={x => this.setState({ savingsView: x })}
+                    onInflowQueryChange={x => this.setState({ inflowQuery: x })}
+                    onOutflowQueryChange={x => this.setState({ outflowQuery: x })}
+                />
+            );
+        } else if (this.state.view === 'budget') {
+            // Planned expenses:
+            // - minus planned assignment to emergency fund (not an expense)
+            // - minus planned spend to investments (e.g. stocks, crypto)
+            const budgetedSpend = this.state.budget.reduce((acc, x) => acc + x.children.filter(x => x.savings).reduce((acc, x) => acc + x.monthly, 0), 0);
+
+            view = (
+                <div>
+                    <fieldset>
+                        <legend>Details</legend>
+                        <div className="form-group">
+                            <label htmlFor="paycheck">Paycheck</label>
+                            <input name="paycheck" type="text" />
+                        </div>
+                        <div className="form-group">
+                            <label htmlFor="savings-rate">Savings Rate</label>
+                            <input name="savings-rate" type="text" />
+                        </div>
+                    </fieldset>
+                    <ul>
+                        <li>Available Spend: {dollars(this.state.paycheck * 2, this.state.sensitive)}</li>
+                        <li>Target Spend: {dollars(this.state.paycheck, this.state.sensitive)}</li>
+                        <li>Budgeted Spend (minus savings): {dollars(budgetedSpend, this.state.sensitive)}</li>
+                        <li>Emergency Fund Size (recommended): {dollars(budgetedSpend * 3, this.state.sensitive)}</li>
+                    </ul>
+                    <div style={{ width: '30em' }}>
+                        <DonutChart labels={this.state.budget.map(x => x.label)} datasets={[
+                            {
+                                label: 'Categories',
+                                data: this.state.budget.map(x => x.children.reduce((acc, y) => acc + y.monthly, 0)),
+                            }
+                        ]} />
+                    </div>
+                    <ul>
+                        {this.state.budget.map(x => (
+                            <li>
+                                <div>{x.label} - {dollars(x.children.reduce((acc, x) => acc + x.monthly, 0), this.state.sensitive)}</div>
+                                <table>
+                                    <thead>
+                                        <tr>
+                                            <th>category</th>
+                                            <th>assigned (target)</th>
+                                            <th>last year (actual)</th>
+                                        </tr>
+                                    </thead>
+                                    <tbody>
+                                        {x.children.map(y => (
+                                            <tr>
+                                                <td>{y.label}</td>
+                                                <td>{dollars(y.monthly, this.state.sensitive)}</td>
+                                                <td>{dollars((categories[y.label] || []).reduce((acc, x) => acc + x.Outflow, 0) / 12, this.state.sensitive)}</td>
+                                            </tr>
+                                        ))}
+                                    </tbody>
+                                </table>
+                            </li>
+                        ))}
+                    </ul>
+                </div>
+            );
+        }
+
+        return (
+            <div className="container">
+                <nav className="terminal-menu">
+                    <ul>
+                        <li><a href="#" onClick={() => this.setState({ view: 'query' })}>query</a></li>
+                        <li><a href="#" onClick={() => this.setState({ view: 'savings' })}>savings</a></li>
+                        <li><a href="#" onClick={() => this.setState({ view: 'budget' })}>budget</a></li>
+                        <li><a href="#" onClick={() => this.setState({ sensitive: !this.state.sensitive })}>sensitive</a></li>
+                    </ul>
+                </nav>
+                <UploadJSON onUpload={xs => this.setState({
+                    allTransactions: xs,
+                    filteredTransactions: select(this.state.query, xs, {
+                        caseSensitive: this.state.slxCaseSensitive,
+                        preferRegex: this.state.slxPreferRegex,
+                        slxDateKey: this.state.slxDateKey,
+                    }).sort(compileSort(this.state.sortExpr))
+                })} />
+                {view}
+            </div>
+        );
+    }
+}
+
+const QueryView = ({ sensitive, query, focus, allTransactions, transactions, saved, setState, slxConfig, sortExpr, transactionsView }) => (
+    <div>
+        <Query
+            query={query}
+            onChange={query => setState({
+                query,
+            })}
+            onFilter={() => setState({
+                filteredTransactions: select(query, allTransactions, slxConfig),
+            })}
+        />
+        <fieldset>
+            <legend>Sort</legend>
+            <div className="form-group">
+                <input type="text" value={sortExpr} onChange={e => setState({ sortExpr: e.target.value, })} />
+            </div>
+            <div className="form-group">
+                <button className="btn btn-default" onClick={() => setState({
+                    filteredTransactions: transactions.slice().sort(compileSort(sortExpr)),
+                })}>Sort</button>
+            </div>
+        </fieldset>
+        <hr />
+        <ScatterChart transactions={transactions} />
+        <hr />
+        <Transactions
+            transactionsView={transactionsView}
+            sensitive={sensitive}
+            transactions={transactions}
+            onClick={x => setState({
+                saved: { ...saved, [transactionKey(x)]: x.Outflow }
+            })}
+            onViewChange={transactionsView => setState({ transactionsView })}
+        />
+    </div>
+);
+
+function classifyRate(x) {
+    if (x < 0.25) {
+        return 'needs improvement';
+    }
+    if (x < 0.50) {
+        return 'healthy';
+    }
+    if (x < 0.75) {
+        return 'rich';
+    }
+    if (x < 1.00) {
+        return 'wealthy';
+    }
+}
+
+const SavingsView = ({
+    sensitive,
+    categories,
+    savingsView,
+    inflowQuery,
+    outflowQuery,
+    inflowTransactions,
+    outflowTransactions,
+    onSavingsViewChange,
+    onInflowQueryChange,
+    onOutflowQueryChange,
+    onFilterInflow,
+    onFilterOutflow,
+    onFilterSavingsView,
+}) => {
+    const revenue = inflowTransactions.reduce((acc, x) => {
+        acc[x.Date.getMonth()] += x.Inflow;
+        return acc;
+    }, new Array(12).fill(0));
+
+    const inflow = inflowTransactions.reduce((acc, x) => acc + x.Inflow, 0);
+    const outflow = outflowTransactions.reduce((acc, x) => acc + x.Outflow, 0);
+
+    const delta25Sum = new Array(12).fill(0);
+    for (let i = 1; i < 12; i += 1) {
+        delta25Sum[i] = delta25Sum[i - 1] + revenue[i] * 0.25;
+    }
+
+    const delta50Sum = new Array(12).fill(0);
+    for (let i = 1; i < 12; i += 1) {
+        delta50Sum[i] = delta50Sum[i - 1] + revenue[i] * 0.5;
+    }
+
+    const delta75Sum = new Array(12).fill(0);
+    for (let i = 1; i < 12; i += 1) {
+        delta75Sum[i] = delta75Sum[i - 1] + revenue[i] * 0.75;
+    }
+
+    return (
+        <section>
+            <fieldset>
+                <legend>Filtering</legend>
+                <div className="form-group">
+                    <label htmlFor="savings-view">Savings View</label>
+                    <input name="savings-view" type="text" placeholder="Savings View..." value={savingsView}
+                        onChange={e => onSavingsViewChange(e.target.value)} />
+                    <button className="btn btn-default" onClick={() => onFilterSavingsView()}>Apply</button>
+                </div>
+                <div className="form-group">
+                    <label htmlFor="inflow-query">Inflow Query</label>
+                    <input name="inflow-query" type="text" placeholder="Inflow query..." value={inflowQuery}
+                        onChange={e => onInflowQueryChange(e.target.value)} />
+                    <button className="btn btn-default" onClick={() => onFilterInflow()}>Filter</button>
+                </div>
+                <div className="form-group">
+                    <label htmlFor="outflow-query">Outflow Query</label>
+                    <input name="outflow-query" type="text" placeholder="Outflow query..." value={outflowQuery}
+                        onChange={e => onOutflowQueryChange(e.target.value)} />
+                    <button className="btn btn-default" onClick={() => onFilterOutflow()}>Filter</button>
+                </div>
+            </fieldset>
+            <ul>
+                <li>inflow: {dollars(inflow, sensitive)}</li>
+                <li>outflow: {dollars(outflow)}</li>
+                <li>savings: {dollars(inflow - outflow)}</li>
+                <li>rate: {parseFloat((inflow - outflow) / inflow * 100).toFixed(2) + "%"} ({classifyRate((inflow - outflow) / inflow)})</li>
+            </ul>
+            <SavingsRateLineChart rate={(inflow - outflow) / inflow} transactions={outflowTransactions} />
+            {/* O($1,000) */}
+            <StackedHistogram labels={months} datasets={Object.keys(categories).map(k => ({
+                label: k,
+                data: categories[k].reduce((acc, x) => {
+                    acc[x.Date.getMonth()] += x.Outflow;
+                    return acc;
+                }, new Array(12).fill(0)).map((x, i) => ({
+                    x: i,
+                    y: x,
+                }))
+            }))} />
+            {/* O($100) */}
+            <StackedHistogram labels={months} datasets={Object.keys(categories).map(k => ({
+                label: k,
+                data: categories[k].reduce((acc, x) => {
+                    acc[x.Date.getMonth()] += x.Outflow;
+                    return acc;
+                }, new Array(12).fill(0)).map((x, i) => ({
+                    x: i,
+                    y: x,
+                }))
+            }))} />
+            {/* O($10) */}
+            <StackedHistogram labels={months} datasets={Object.keys(categories).map(k => ({
+                label: k,
+                data: categories[k].reduce((acc, x) => {
+                    acc[x.Date.getMonth()] += x.Outflow;
+                    return acc;
+                }, new Array(12).fill(0)).map((x, i) => ({
+                    x: i,
+                    y: x,
+                }))
+            }))} />
+            {/* <GenLineChart x="X" y="Y" datasets={[
+                {
+                    label: '25%',
+                    data: delta25Sum.map((x, i) => ({
+                        x: i,
+                        y: x,
+                    })),
+                },
+                {
+                    label: '50%',
+                    data: delta50Sum.map((x, i) => ({
+                        x: i,
+                        y: x,
+                    })),
+                },
+                {
+                    label: '75%',
+                    data: delta75Sum.map((x, i) => ({
+                        x: i,
+                        y: x,
+                    })),
+                },
+            ]} /> */}
+            <hr />
+            <table>
+                <thead>
+                    <tr>
+                        <th>Month</th>
+                        <th>Delta (25%)</th>
+                        <th>Delta (50%)</th>
+                        <th>Delta (75%)</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    {months.map((x, i) => (
+                        <tr key={i}>
+                            <td>{x}</td>
+                            <td>{dollars(delta25Sum[i], sensitive)}</td>
+                            <td>{dollars(delta50Sum[i], sensitive)}</td>
+                            <td>{dollars(delta75Sum[i], sensitive)}</td>
+                        </tr>
+                    ))}
+                </tbody>
+            </table>
+        </section>
+    );
+};
+
+const Calculator = ({ sensitive, saved, onClear }) => (
+    <div>
+        <ul>
+            {Object.keys(saved).map(k => (
+                <li key={k}>
+                    {dollars(saved[k], sensitive)} {k}
+                </li>
+            ))}
+        </ul>
+        <p>{dollars(savedSum, sensitive)}</p>
+        <button className="btn btn-default" onClick={() => onClear()}>clear</button>
+    </div>
+);
+
+/**
+ * Table rendering information about transactions bucketed by its order of
+ * magnitude.
+ */
+const Magnitable = ({ sensitive, label, transactions }) => {
+    const categories = transactions.reduce((acc, x) => {
+        if (x.Category === '') {
+            return acc;
+        }
+        if (!(x.Category in acc)) {
+            acc[x.Category] = 0;
+        }
+        acc[x.Category] += x.Outflow;
+        return acc;
+    }, {});
+
+    // Sort category keys by sum decreasing.
+    const keys = [...Object.keys(categories)].sort((x, y) => {
+        if (categories[x] < categories[y]) {
+            return 1;
+        } else if (categories[x] > categories[y]) {
+            return -1;
+        } else {
+            return 0;
+        }
+    });
+
+    return (
+        <React.Fragment>
+            {keys.map(k => (
+                <tr style={{ backgroundColor: '#F0F8FF' }}>
+                    <td>{k}</td><td>{dollars(categories[k], sensitive)}</td>
+                </tr>
+            ))}
+        </React.Fragment>
+    );
+};
+
+/**
+ * Calculates and renders various aggregates over an input list of transactions.
+ */
+const AggregateTable = ({ sensitive, focus, onFocus, transactions }) => {
+    const net = transactions.reduce((acc, x) => acc + x.Inflow - x.Outflow, 0);
+    const sum = transactions.reduce((acc, x) => acc + x.Outflow, 0);
+    const buckets = transactions.reduce((acc, x) => {
+        const order = magnitude(x.Outflow);
+        const bucket = Math.pow(10, order);
+        acc[bucket].push(x);
+        return acc;
+    }, { 0.1: [], 0: [], 1: [], 10: [], 100: [], 1000: [] });
+
+    return (
+        <div>
+            <table>
+                <caption>Aggregations</caption>
+                <thead>
+                    <tr>
+                        <th>function</th>
+                        <th>value</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    <tr><td>net</td><td>{dollars(net, sensitive)}</td></tr>
+                    <tr onClick={() => onFocus('sum')}><td>sum</td><td>{dollars(sum, sensitive)}</td></tr>
+                    {focus.sum && <Magnitable sensitive={sensitive} label="sum" transactions={transactions} />}
+                    <tr><td>per day</td><td>{dollars(sum / 365, sensitive)}</td></tr>
+                    <tr><td>per week</td><td>{dollars(sum / 52, sensitive)}</td></tr>
+                    <tr><td>per month</td><td>{dollars(sum / 12, sensitive)}</td></tr>
+                    <tr onClick={() => onFocus(1000)}><td>Σ Θ($1,000)</td><td>{dollars(buckets[1000].reduce((acc, x) => acc + x.Outflow, 0), sensitive)}</td></tr>
+                    {(focus[1000]) && <Magnitable sensitive={sensitive} label="$1,000" transactions={buckets[1000]} />}
+                    <tr onClick={() => onFocus(100)}><td>Σ Θ($100)</td><td>{dollars(buckets[100].reduce((acc, x, sensitive) => acc + x.Outflow, 0), sensitive)}</td></tr>
+                    {(focus[100]) && <Magnitable sensitive={sensitive} label="$100" transactions={buckets[100]} />}
+                    <tr onClick={() => onFocus(10)}><td>Σ Θ($10)</td><td>{dollars(buckets[10].reduce((acc, x) => acc + x.Outflow, 0), sensitive)}</td></tr>
+                    {(focus[10]) && <Magnitable sensitive={sensitive} label="$10" transactions={buckets[10]} />}
+                    <tr onClick={() => onFocus(1)}><td>Σ Θ($1)</td><td>{dollars(buckets[1].reduce((acc, x) => acc + x.Outflow, 0), sensitive)}</td></tr>
+                    {(focus[1]) && <Magnitable sensitive={sensitive} label="$1.00" transactions={buckets[1]} />}
+                    <tr onClick={() => onFocus(0.1)}><td>Σ Θ($0.10)</td><td>{dollars(buckets[0.1].reduce((acc, x) => acc + x.Outflow, 0), sensitive)}</td></tr>
+                    {(focus[0.1]) && <Magnitable sensitive={sensitive} label="$0.10" transactions={buckets[0.1]} />}
+                    <tr><td>average</td><td>{dollars(sum / transactions.length, sensitive)}</td></tr>
+                    <tr><td>count</td><td>{transactions.length}</td></tr>
+                </tbody>
+            </table>
+        </div>
+    );
+};
+
+const Query = ({ query, onChange, onFilter }) => (
+    <fieldset>
+        <legend>Query</legend>
+        <div className="form-group">
+            <input name="query" type="text" value={query} onChange={e => onChange(e.target.value)} />
+        </div>
+        <div className="form-group">
+            <button className="btn btn-default" onClick={() => onFilter()}>Filter</button>
+        </div>
+    </fieldset>
+);
+
+const tableHeaders = [
+    'Account',
+    'Category',
+    'Date',
+    'Inflow',
+    'Outflow',
+    'Payee',
+    'Memo',
+];
+
+const Transactions = ({ sensitive, transactions, onSort, onClick, onViewChange, transactionsView }) => {
+    let view = null;
+    if (transactionsView === 'table') {
+        view = (
+            <table>
+                <thead>
+                    <tr>
+                        {tableHeaders.map(x => <th>{x}</th>)}
+                    </tr>
+                </thead>
+                <tbody>
+                    {transactions.map(x => (
+                        <tr onClick={() => onClick(x)}>
+                            <td>{x.Account}</td>
+                            <td>{x.Category}</td>
+                            <td>{x.Date.toLocaleDateString()}</td>
+                            <td>{dollars(x.Inflow, sensitive)}</td>
+                            <td>{dollars(x.Outflow, sensitive)}</td>
+                            <td>{x.Payee}</td>
+                            <td>{x.Memo}</td>
+                        </tr>
+                    ))}
+                </tbody>
+            </table>
+        );
+    }
+    else if (transactionsView === 'csv') {
+        view = (
+            <code>{tableHeaders.join(',') + '\n' + transactions.map(x => tableHeaders.map(k => x[k]).join(',')).join("\n")}</code>
+        );
+    }
+    else if (transactionsView === 'json') {
+        view = (
+            <code>{JSON.stringify(transactions)}</code>
+        );
+    }
+
+    return (
+        <div>
+            <legend>Transactions</legend>
+            <div className="btn-group">
+                <button onClick={() => onViewChange('table')} className="btn btn-default btn-ghost">Table</button>
+                <button onClick={() => onViewChange('csv')} className="btn btn-default btn-ghost">CSV</button>
+                <button onClick={() => onViewChange('json')} className="btn btn-default btn-ghost">JSON</button>
+            </div>
+            {view}
+        </div>
+    );
+}
+
+const domContainer = document.querySelector('#mount');
+const root = ReactDOM.createRoot(domContainer);
+
+root.render(<App />);