diving-decompression/lib/index.js

Exposes methods for defining/calculating diving decompression schedules/protocols based on the US Navy dive manual revision 7

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const lodash_1 = __importDefault(require("lodash"));
const usnavy_deco_rev7_1 = __importDefault(require("./tables/usnavy-deco-rev7"));
const usnavy_nodeco_rev7_1 = __importDefault(require("./tables/usnavy-nodeco-rev7"));
const usnavy_repetGroupLetter_1 = __importDefault(require("./tables/usnavy-repetGroupLetter"));
const usnavy_rnt_1 = __importDefault(require("./tables/usnavy-rnt"));
exports.noDecompressionLimit = ({ depth }) => {
    const row = lodash_1.default.find(usnavy_nodeco_rev7_1.default.tableData, (element) => {
        return element.minfsw <= depth && depth <= element.maxfsw;
    });
    if (row) {
        return row.noStopLimit;
    }
    else {
        return undefined;
    }
};
exports.groupLetter = ({ depth, bottomTime }) => {
    const row = lodash_1.default.find(usnavy_nodeco_rev7_1.default.tableData, (element) => {
        return element.minfsw <= depth && depth <= element.maxfsw;
    });
    if (row) {
        const group = lodash_1.default.find(row.values, (element) => {
            return element.minTime <= bottomTime && bottomTime <= element.maxTime;
        });
        if (group) {
            return group.groupLetter;
        }
        else {
            return undefined;
        }
    }
    else {
        return undefined;
    }
};
exports.repetLetter = ({ bottomTime, depth, sit }) => {
    const row = lodash_1.default.find(usnavy_nodeco_rev7_1.default.tableData, (element) => {
        return element.minfsw <= depth && depth <= element.maxfsw;
    });
    if (row) {
        const group = lodash_1.default.find(row.values, (element) => {
            return element.minTime <= bottomTime && bottomTime <= element.maxTime;
        });
        if (group) {
            const repet = lodash_1.default.find(usnavy_repetGroupLetter_1.default.tableData, (element) => {
                return element.groupLetter === group.groupLetter && element.minTime <= sit && sit <= element.maxTime;
            });
            if (repet) {
                return repet.repetLetter;
            }
            else {
                return undefined;
            }
        }
        else {
            return undefined;
        }
    }
    else {
        return undefined;
    }
};
exports.residualNitrogenTime = ({ bottomTime, depth, sit, nextDepth }) => {
    const row = lodash_1.default.find(usnavy_nodeco_rev7_1.default.tableData, (element) => {
        return element.minfsw <= depth && depth <= element.maxfsw;
    });
    if (row) {
        const group = lodash_1.default.find(row.values, (element) => {
            return element.minTime <= bottomTime && bottomTime <= element.maxTime;
        });
        if (group) {
            const repet = lodash_1.default.find(usnavy_repetGroupLetter_1.default.tableData, (element) => {
                return element.groupLetter === group.groupLetter && element.minTime <= sit && sit <= element.maxTime;
            });
            if (repet) {
                const column = lodash_1.default.find(usnavy_rnt_1.default.tableData, (element) => {
                    return element.repetLetter === repet.repetLetter;
                });
                if (column) {
                    const rnt = lodash_1.default.find(column.rnt, (element) => {
                        return element.minDepth <= nextDepth && nextDepth <= element.maxDepth;
                    });
                    if (rnt && rnt.rnt === 0) {
                        return usnavy_rnt_1.default.tableNote9981;
                    }
                    else if (rnt && rnt.rnt > 0) {
                        return rnt.rnt;
                    }
                }
                else {
                    return undefined;
                }
            }
            else {
                return undefined;
            }
        }
        else {
            return undefined;
        }
    }
    else {
        return undefined;
    }
};
exports.decoDive = ({ bottomTime, depth }) => {
    const table = lodash_1.default.find(usnavy_deco_rev7_1.default.tableData, (element) => {
        return element.minfsw <= depth && depth <= element.maxfsw;
    });
    if (table) {
        const decoProfile = lodash_1.default.find(table.rows, (element) => {
            return element.minTime <= bottomTime && bottomTime <= element.maxTime;
        });
        if (decoProfile) {
            return decoProfile;
        }
        else {
            return 'no deco profile Found';
        }
    }
    else {
        return 'No Table Found';
    }
};